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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2312.12266
|
Tal Sheaffer
|
Ofer Aharony, Suman Kundu and Tal Sheaffer
|
A String Theory for Two Dimensional Yang-Mills Theory I
|
52 pages + appendices, 9 figures. A few comments and references
added. JHEP published version
| null |
10.1007/JHEP07(2024)063
| null |
hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
Two dimensional gauge theories with charged matter fields are useful toy
models for studying gauge theory dynamics, and in particular for studying the
duality of large $N$ gauge theories to perturbative string theories. A useful
starting point for such studies is the pure Yang-Mills theory, which is exactly
solvable. Its $1/N$ expansion was interpreted as a string theory by Gross and
Taylor 30 years ago, but they did not provide a worldsheet action for this
string theory, and such an action is useful for coupling it to matter fields.
The chiral sector of the Yang-Mills theory can be written as a sum over
holomorphic maps and has useful worldsheet descriptions, but the full theory
includes more general extremal-area maps; a formal worldsheet action including
all these maps in a "topological rigid string theory" was written by Ho\v{r}ava
many years ago, but various subtleties arise when trying to use it for
computations. In this paper we suggest a Polyakov-like generalization of
Ho\v{r}ava's worldsheet action which is well-defined, and we show how it
reproduces the free limit of the Yang-Mills theory, both by formal arguments
and by explicitly computing its partition function in several cases. In the
future we plan to generalize this string theory to the finite-coupling gauge
theory, and to analyze it with boundaries, corresponding either to Wilson loops
or to dynamical matter fields in the fundamental representation.
|
[
{
"created": "Tue, 19 Dec 2023 15:49:55 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Jan 2024 16:53:21 GMT",
"version": "v2"
},
{
"created": "Wed, 19 Jun 2024 15:42:45 GMT",
"version": "v3"
}
] |
2024-07-11
|
[
[
"Aharony",
"Ofer",
""
],
[
"Kundu",
"Suman",
""
],
[
"Sheaffer",
"Tal",
""
]
] |
Two dimensional gauge theories with charged matter fields are useful toy models for studying gauge theory dynamics, and in particular for studying the duality of large $N$ gauge theories to perturbative string theories. A useful starting point for such studies is the pure Yang-Mills theory, which is exactly solvable. Its $1/N$ expansion was interpreted as a string theory by Gross and Taylor 30 years ago, but they did not provide a worldsheet action for this string theory, and such an action is useful for coupling it to matter fields. The chiral sector of the Yang-Mills theory can be written as a sum over holomorphic maps and has useful worldsheet descriptions, but the full theory includes more general extremal-area maps; a formal worldsheet action including all these maps in a "topological rigid string theory" was written by Ho\v{r}ava many years ago, but various subtleties arise when trying to use it for computations. In this paper we suggest a Polyakov-like generalization of Ho\v{r}ava's worldsheet action which is well-defined, and we show how it reproduces the free limit of the Yang-Mills theory, both by formal arguments and by explicitly computing its partition function in several cases. In the future we plan to generalize this string theory to the finite-coupling gauge theory, and to analyze it with boundaries, corresponding either to Wilson loops or to dynamical matter fields in the fundamental representation.
|
2306.10764
|
Geoff Beck
|
Geoff Beck
|
Multi-frequency probes of 2HDM+S dark matter
|
7 pages, 3 figures, submitted to proceedings of High Energy
Astrophysics in Southern Africa conference 2022
| null | null | null |
hep-ph astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The two-Higgs-doublet with additional scalar (2HDM$+S$) model is one proposed
to account for several anomalies that have persisted and increased in
significance over runs 1 and 2 at the Large Hadron Collider (LHC). In addition
to this, 2HDM+$S$ also supplies a potential Dark Matter (DM) candidate coupling
to the Standard Model via the $S$ boson. So far, this model has been difficult
to constrain by indirect means. Here we will explore the potential of Omega
Centauri, a nearby globular cluster to constrain this interesting DM model.
Although such structures are generally considered to be lacking in DM,
arguments have been made that this cluster is in fact the relic of a tidally
stripped dwarf galaxy. In such a scenario, the DM content would be significant.
Combined with its nearness, this would suggest a potential for powerful
indirect dark matter signals. We employ both Fermi-LAT gamma-ray data, as well
as MeerKAT telescope sensitivities to determine the current status of Omega
Centauri as a source of indirect constraints on Weakly Interacting Massive
Particles (WIMPs) in a 2HDM+$S$ scenario and for general annihilation channels.
|
[
{
"created": "Mon, 19 Jun 2023 08:15:13 GMT",
"version": "v1"
}
] |
2023-06-21
|
[
[
"Beck",
"Geoff",
""
]
] |
The two-Higgs-doublet with additional scalar (2HDM$+S$) model is one proposed to account for several anomalies that have persisted and increased in significance over runs 1 and 2 at the Large Hadron Collider (LHC). In addition to this, 2HDM+$S$ also supplies a potential Dark Matter (DM) candidate coupling to the Standard Model via the $S$ boson. So far, this model has been difficult to constrain by indirect means. Here we will explore the potential of Omega Centauri, a nearby globular cluster to constrain this interesting DM model. Although such structures are generally considered to be lacking in DM, arguments have been made that this cluster is in fact the relic of a tidally stripped dwarf galaxy. In such a scenario, the DM content would be significant. Combined with its nearness, this would suggest a potential for powerful indirect dark matter signals. We employ both Fermi-LAT gamma-ray data, as well as MeerKAT telescope sensitivities to determine the current status of Omega Centauri as a source of indirect constraints on Weakly Interacting Massive Particles (WIMPs) in a 2HDM+$S$ scenario and for general annihilation channels.
|
0810.4640
|
Joseph Schechter
|
Amir H. Fariborz, Renata Jora and Joseph Schechter
|
Exploration of a physical picture for the QCD scalar channel
|
talk at QCD08
| null |
10.1016/j.nuclphysbps.2008.12.067
|
SU-4252-879
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A generalized linear sigma model is employed to study the quark structure of
low lying scalar as well as pseudoscalar states. The model allows the possible
mixing of quark anti-quark states with others made of two quarks and two
antiquarks but no a priori assumption is made about the quark contents of the
predicted physical states. Effects of SU(3) symmetry breaking are included. The
lighter conventional pseudoscalars turn out to be primarily of two quark type
whereas the lighter scalars have very large four quark admixtures.
|
[
{
"created": "Sat, 25 Oct 2008 19:09:49 GMT",
"version": "v1"
}
] |
2009-11-13
|
[
[
"Fariborz",
"Amir H.",
""
],
[
"Jora",
"Renata",
""
],
[
"Schechter",
"Joseph",
""
]
] |
A generalized linear sigma model is employed to study the quark structure of low lying scalar as well as pseudoscalar states. The model allows the possible mixing of quark anti-quark states with others made of two quarks and two antiquarks but no a priori assumption is made about the quark contents of the predicted physical states. Effects of SU(3) symmetry breaking are included. The lighter conventional pseudoscalars turn out to be primarily of two quark type whereas the lighter scalars have very large four quark admixtures.
|
1408.4456
|
Raoul Malm
|
Raoul Malm, Matthias Neubert and Christoph Schmell
|
Higgs Couplings and Phenomenology in a Warped Extra Dimension
|
28 pages plus appendix, 9 figures; equation (52) corrected,
references updated
| null |
10.1007/JHEP02(2015)008
|
MITP/14-049
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a comprehensive description of the Higgs-boson couplings to
Standard Model fermions and bosons in Randall-Sundrum (RS) models with a Higgs
sector localized on or near the infra-red brane. The analytic results for all
relevant Higgs couplings including the loop-induced couplings to gluons and
photons are summarized for both the minimal and the custodial RS model. The RS
predictions for all relevant Higgs decays are compared with current LHC data,
which already exclude significant portions of the parameter space. We show that
the latest measurements are sensitive to KK gluon masses up to $20\, \rm{TeV}
\times (y_*/3)$ at $95\%$ confidence level for anarchic 5D Yukawa couplings
bounded from above by $|(Y_f)_{ij}| < y_*$. We also derive the sensitivity
levels attainable in the high-luminosity run of the LHC and at a future linear
collider.
|
[
{
"created": "Tue, 19 Aug 2014 20:00:20 GMT",
"version": "v1"
},
{
"created": "Thu, 28 Aug 2014 13:31:37 GMT",
"version": "v2"
}
] |
2015-06-22
|
[
[
"Malm",
"Raoul",
""
],
[
"Neubert",
"Matthias",
""
],
[
"Schmell",
"Christoph",
""
]
] |
We present a comprehensive description of the Higgs-boson couplings to Standard Model fermions and bosons in Randall-Sundrum (RS) models with a Higgs sector localized on or near the infra-red brane. The analytic results for all relevant Higgs couplings including the loop-induced couplings to gluons and photons are summarized for both the minimal and the custodial RS model. The RS predictions for all relevant Higgs decays are compared with current LHC data, which already exclude significant portions of the parameter space. We show that the latest measurements are sensitive to KK gluon masses up to $20\, \rm{TeV} \times (y_*/3)$ at $95\%$ confidence level for anarchic 5D Yukawa couplings bounded from above by $|(Y_f)_{ij}| < y_*$. We also derive the sensitivity levels attainable in the high-luminosity run of the LHC and at a future linear collider.
|
1510.04490
|
Wolfgang M\"uck
|
Wolfgang M\"uck
|
Photons in a Ball
|
16 pages, 1 figure, v.2: added reference as in published version
|
Eur. Phys. J. C (2015) 75:585
|
10.1140/epjc/s10052-015-3811-0
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The electromagnetic field inside a spherical cavity of large radius R is
considered in the presence of stationary charge and current densities. R
provides infra-red regularization while maintaining gauge invariance. The
quantum ground state of physical photons forming the magnetic field is found to
be a coherent state with a definite mean occupation number. The electric field,
which is determined by the Gauss law constraint, is maintained by a minimum
uncertainty coherent state, according to the projection operator approach to
the quantization of constrained systems. The mean occupation number of this
state is proportional to the square of the total charge. The results confirm
formulae obtained previously from a calculation with a finite photon mass for
infra-red regularization.
|
[
{
"created": "Thu, 15 Oct 2015 12:09:41 GMT",
"version": "v1"
},
{
"created": "Wed, 16 Dec 2015 14:28:35 GMT",
"version": "v2"
}
] |
2015-12-17
|
[
[
"Mück",
"Wolfgang",
""
]
] |
The electromagnetic field inside a spherical cavity of large radius R is considered in the presence of stationary charge and current densities. R provides infra-red regularization while maintaining gauge invariance. The quantum ground state of physical photons forming the magnetic field is found to be a coherent state with a definite mean occupation number. The electric field, which is determined by the Gauss law constraint, is maintained by a minimum uncertainty coherent state, according to the projection operator approach to the quantization of constrained systems. The mean occupation number of this state is proportional to the square of the total charge. The results confirm formulae obtained previously from a calculation with a finite photon mass for infra-red regularization.
|
hep-ph/0009238
|
Carl E. Carlson
|
Carl E. Carlson (William and Mary)
|
Predictions for the Decays of Radially-Excited Baryons
|
2 pages, no figures. To appear in Proceedings of ICHEP2000, Osaka,
Japan, 27 July - 2 August 2000
| null | null |
WM-00-110
|
hep-ph
| null |
We consider decays of the lowest-lying radially excited baryons. Assuming a
single-quark decay approximation, and negligible configuration mixing, we make
model-independent predictions for the partial decay widths to final states with
a single meson. Masses of unobserved states are predicted using an old mass
formula rederived using large-$N_c$ QCD. The momentum dependence of the
one-body decay amplitude is determined phenomenologically by fitting to
observed decays. Comparison of these predictions to experiment may shed light
on whether the Roper resonance can be interpreted as a three-quark state.
|
[
{
"created": "Wed, 20 Sep 2000 16:08:05 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Carlson",
"Carl E.",
"",
"William and Mary"
]
] |
We consider decays of the lowest-lying radially excited baryons. Assuming a single-quark decay approximation, and negligible configuration mixing, we make model-independent predictions for the partial decay widths to final states with a single meson. Masses of unobserved states are predicted using an old mass formula rederived using large-$N_c$ QCD. The momentum dependence of the one-body decay amplitude is determined phenomenologically by fitting to observed decays. Comparison of these predictions to experiment may shed light on whether the Roper resonance can be interpreted as a three-quark state.
|
2111.05659
|
Christian Pfeifer
|
A. Addazi, J. Alvarez-Muniz, R. Alves Batista, G. Amelino-Camelia, V.
Antonelli, M. Arzano, M. Asorey, J.-L. Atteia, S. Bahamonde, F. Bajardi, A.
Ballesteros, B. Baret, D. M. Barreiros, S. Basilakos, D. Benisty, O.
Birnholtz, J. J. Blanco-Pillado, D. Blas, J. Bolmont, D. Boncioli, P. Bosso,
G. Calcagni, S. Capozziello, J. M. Carmona, S. Cerci, M. Chernyakova, S.
Clesse, J. A. B. Coelho, S. M. Colak, J. L. Cortes, S. Das, V. D'Esposito, M.
Demirci, M. G. Di Luca, A. di Matteo, D. Dimitrijevic, G. Djordjevic, D.
Dominis Prester, A. Eichhorn, J. Ellis, C. Escamilla-Rivera, G. Fabiano, S.
A. Franchino-Vi\~nas, A. M. Frassino, D. Frattulillo, S. Funk, A. Fuster, J.
Gamboa, A. Gent, L. \'A. Gergely, M. Giammarchi, K. Giesel, J.-F.
Glicenstein, J. Gracia-Bond\'ia, G. Gubitosi, E. I. Guendelman, I.
Gutierrez-Sagredo, L. Haegel, S. Heefer, A. Held, F. J. Herranz, T. Hinderer,
J. I. Illana, A. Ioannisian, P. Jetzer, F. R. Joaquim, K.-H. Kampert, A.
Karasu Uysal, T. Katori, N. Kazarian, D. Kerszberg, J. Kowalski-Glikman, S.
Kuroyanagi, C. L\"ammerzahl, J. Levi Said, S. Liberati, E. Lim, I. P. Lobo,
M. L\'opez-Moya, G.G. Luciano, M. Manganaro, A. Marcian\`o, P.
Mart\'in-Moruno, Manel Martinez, Mario Martinez, H. Mart\'inez-Huerta, P.
Mart\'inez-Mirav\'e, M. Masip, D. Mattingly, N. Mavromatos, A. Mazumdar, F.
M\'endez, F. Mercati, S. Micanovic, J. Mielczarek, A. L. Miller, M.
Milosevic, D. Minic, L. Miramonti, V. A. Mitsou, P. Moniz, S. Mukherjee, G.
Nardini, S. Navas, M. Niechciol, A. B. Nielsen, N. A. Obers, F. Oikonomou, D.
Oriti, C. F. Paganini, S. Palomares-Ruiz, R. Pasechnik, C. P\'erez de los
Heros, C. Pfeifer, M. P. Pieroni, T. Piran, A. Platania, S. Rastgoo, J. J.
Relancio, M. A. Reyes, A. Ricciardone, M. Risse, M. D. Rodriguez Frias, G.
Rosati, D. Rubiera-Garcia, H. Sahlmann, M. Sakellariadou, F. Salamida, E. N.
Saridakis, P. Satunin, M. Schiffer, F. Sch\"ussler, G. Sigl, J. Sitarek, J.
Sol\`a Peracaula, C. F. Sopuerta, T. P. Sotiriou, M. Spurio, D. Staicova, N.
Stergioulas, S. Stoica, J. Stri\v{s}kovi\'c, T. Stuttard, D. Sunar Cerci, Y.
Tavakoli, C.A. Ternes, T. Terzi\'c, T. Thiemann, P. Tinyakov, M. D. C. Torri,
M. T\'ortola, C. Trimarelli, T. Trze\'sniewski, A. Tureanu, F. R. Urban, E.
C. Vagenas, D. Vernieri, V. Vitagliano, J.-C. Wallet, J. D. Zornoza
|
Quantum gravity phenomenology at the dawn of the multi-messenger era --
A review
|
This review was written by participants of the COST Action CA18108.
Further information on the review can be found at
https://qg-mm.unizar.es/review/, updated to published version
|
Progress in Particle and Nuclear Physics, Volume 125, July 2022,
103948
|
10.1016/j.ppnp.2022.103948
| null |
hep-ph astro-ph.HE gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The exploration of the universe has recently entered a new era thanks to the
multi-messenger paradigm, characterized by a continuous increase in the
quantity and quality of experimental data that is obtained by the detection of
the various cosmic messengers (photons, neutrinos, cosmic rays and
gravitational waves) from numerous origins. They give us information about
their sources in the universe and the properties of the intergalactic medium.
Moreover, multi-messenger astronomy opens up the possibility to search for
phenomenological signatures of quantum gravity. On the one hand, the most
energetic events allow us to test our physical theories at energy regimes which
are not directly accessible in accelerators; on the other hand, tiny effects in
the propagation of very high energy particles could be amplified by
cosmological distances. After decades of merely theoretical investigations, the
possibility of obtaining phenomenological indications of Planck-scale effects
is a revolutionary step in the quest for a quantum theory of gravity, but it
requires cooperation between different communities of physicists (both
theoretical and experimental). This review is aimed at promoting this
cooperation by giving a state-of-the art account of the interdisciplinary
expertise that is needed in the effective search of quantum gravity footprints
in the production, propagation and detection of cosmic messengers.
|
[
{
"created": "Wed, 10 Nov 2021 11:54:38 GMT",
"version": "v1"
},
{
"created": "Tue, 29 Mar 2022 14:45:43 GMT",
"version": "v2"
}
] |
2022-05-17
|
[
[
"Addazi",
"A.",
""
],
[
"Alvarez-Muniz",
"J.",
""
],
[
"Batista",
"R. Alves",
""
],
[
"Amelino-Camelia",
"G.",
""
],
[
"Antonelli",
"V.",
""
],
[
"Arzano",
"M.",
""
],
[
"Asorey",
"M.",
""
],
[
"Atteia",
"J. -L.",
""
],
[
"Bahamonde",
"S.",
""
],
[
"Bajardi",
"F.",
""
],
[
"Ballesteros",
"A.",
""
],
[
"Baret",
"B.",
""
],
[
"Barreiros",
"D. M.",
""
],
[
"Basilakos",
"S.",
""
],
[
"Benisty",
"D.",
""
],
[
"Birnholtz",
"O.",
""
],
[
"Blanco-Pillado",
"J. J.",
""
],
[
"Blas",
"D.",
""
],
[
"Bolmont",
"J.",
""
],
[
"Boncioli",
"D.",
""
],
[
"Bosso",
"P.",
""
],
[
"Calcagni",
"G.",
""
],
[
"Capozziello",
"S.",
""
],
[
"Carmona",
"J. M.",
""
],
[
"Cerci",
"S.",
""
],
[
"Chernyakova",
"M.",
""
],
[
"Clesse",
"S.",
""
],
[
"Coelho",
"J. A. B.",
""
],
[
"Colak",
"S. M.",
""
],
[
"Cortes",
"J. L.",
""
],
[
"Das",
"S.",
""
],
[
"D'Esposito",
"V.",
""
],
[
"Demirci",
"M.",
""
],
[
"Di Luca",
"M. G.",
""
],
[
"di Matteo",
"A.",
""
],
[
"Dimitrijevic",
"D.",
""
],
[
"Djordjevic",
"G.",
""
],
[
"Prester",
"D. Dominis",
""
],
[
"Eichhorn",
"A.",
""
],
[
"Ellis",
"J.",
""
],
[
"Escamilla-Rivera",
"C.",
""
],
[
"Fabiano",
"G.",
""
],
[
"Franchino-Viñas",
"S. A.",
""
],
[
"Frassino",
"A. M.",
""
],
[
"Frattulillo",
"D.",
""
],
[
"Funk",
"S.",
""
],
[
"Fuster",
"A.",
""
],
[
"Gamboa",
"J.",
""
],
[
"Gent",
"A.",
""
],
[
"Gergely",
"L. Á.",
""
],
[
"Giammarchi",
"M.",
""
],
[
"Giesel",
"K.",
""
],
[
"Glicenstein",
"J. -F.",
""
],
[
"Gracia-Bondía",
"J.",
""
],
[
"Gubitosi",
"G.",
""
],
[
"Guendelman",
"E. I.",
""
],
[
"Gutierrez-Sagredo",
"I.",
""
],
[
"Haegel",
"L.",
""
],
[
"Heefer",
"S.",
""
],
[
"Held",
"A.",
""
],
[
"Herranz",
"F. J.",
""
],
[
"Hinderer",
"T.",
""
],
[
"Illana",
"J. I.",
""
],
[
"Ioannisian",
"A.",
""
],
[
"Jetzer",
"P.",
""
],
[
"Joaquim",
"F. R.",
""
],
[
"Kampert",
"K. -H.",
""
],
[
"Uysal",
"A. Karasu",
""
],
[
"Katori",
"T.",
""
],
[
"Kazarian",
"N.",
""
],
[
"Kerszberg",
"D.",
""
],
[
"Kowalski-Glikman",
"J.",
""
],
[
"Kuroyanagi",
"S.",
""
],
[
"Lämmerzahl",
"C.",
""
],
[
"Said",
"J. Levi",
""
],
[
"Liberati",
"S.",
""
],
[
"Lim",
"E.",
""
],
[
"Lobo",
"I. P.",
""
],
[
"López-Moya",
"M.",
""
],
[
"Luciano",
"G. G.",
""
],
[
"Manganaro",
"M.",
""
],
[
"Marcianò",
"A.",
""
],
[
"Martín-Moruno",
"P.",
""
],
[
"Martinez",
"Manel",
""
],
[
"Martinez",
"Mario",
""
],
[
"Martínez-Huerta",
"H.",
""
],
[
"Martínez-Miravé",
"P.",
""
],
[
"Masip",
"M.",
""
],
[
"Mattingly",
"D.",
""
],
[
"Mavromatos",
"N.",
""
],
[
"Mazumdar",
"A.",
""
],
[
"Méndez",
"F.",
""
],
[
"Mercati",
"F.",
""
],
[
"Micanovic",
"S.",
""
],
[
"Mielczarek",
"J.",
""
],
[
"Miller",
"A. L.",
""
],
[
"Milosevic",
"M.",
""
],
[
"Minic",
"D.",
""
],
[
"Miramonti",
"L.",
""
],
[
"Mitsou",
"V. A.",
""
],
[
"Moniz",
"P.",
""
],
[
"Mukherjee",
"S.",
""
],
[
"Nardini",
"G.",
""
],
[
"Navas",
"S.",
""
],
[
"Niechciol",
"M.",
""
],
[
"Nielsen",
"A. B.",
""
],
[
"Obers",
"N. A.",
""
],
[
"Oikonomou",
"F.",
""
],
[
"Oriti",
"D.",
""
],
[
"Paganini",
"C. F.",
""
],
[
"Palomares-Ruiz",
"S.",
""
],
[
"Pasechnik",
"R.",
""
],
[
"Heros",
"C. Pérez de los",
""
],
[
"Pfeifer",
"C.",
""
],
[
"Pieroni",
"M. P.",
""
],
[
"Piran",
"T.",
""
],
[
"Platania",
"A.",
""
],
[
"Rastgoo",
"S.",
""
],
[
"Relancio",
"J. J.",
""
],
[
"Reyes",
"M. A.",
""
],
[
"Ricciardone",
"A.",
""
],
[
"Risse",
"M.",
""
],
[
"Frias",
"M. D. Rodriguez",
""
],
[
"Rosati",
"G.",
""
],
[
"Rubiera-Garcia",
"D.",
""
],
[
"Sahlmann",
"H.",
""
],
[
"Sakellariadou",
"M.",
""
],
[
"Salamida",
"F.",
""
],
[
"Saridakis",
"E. N.",
""
],
[
"Satunin",
"P.",
""
],
[
"Schiffer",
"M.",
""
],
[
"Schüssler",
"F.",
""
],
[
"Sigl",
"G.",
""
],
[
"Sitarek",
"J.",
""
],
[
"Peracaula",
"J. Solà",
""
],
[
"Sopuerta",
"C. F.",
""
],
[
"Sotiriou",
"T. P.",
""
],
[
"Spurio",
"M.",
""
],
[
"Staicova",
"D.",
""
],
[
"Stergioulas",
"N.",
""
],
[
"Stoica",
"S.",
""
],
[
"Strišković",
"J.",
""
],
[
"Stuttard",
"T.",
""
],
[
"Cerci",
"D. Sunar",
""
],
[
"Tavakoli",
"Y.",
""
],
[
"Ternes",
"C. A.",
""
],
[
"Terzić",
"T.",
""
],
[
"Thiemann",
"T.",
""
],
[
"Tinyakov",
"P.",
""
],
[
"Torri",
"M. D. C.",
""
],
[
"Tórtola",
"M.",
""
],
[
"Trimarelli",
"C.",
""
],
[
"Trześniewski",
"T.",
""
],
[
"Tureanu",
"A.",
""
],
[
"Urban",
"F. R.",
""
],
[
"Vagenas",
"E. C.",
""
],
[
"Vernieri",
"D.",
""
],
[
"Vitagliano",
"V.",
""
],
[
"Wallet",
"J. -C.",
""
],
[
"Zornoza",
"J. D.",
""
]
] |
The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers.
|
2109.05245
|
Reiji Yoshioka
|
H. Itoyama, A. Mironov, A. Morozov, R. Yoshioka
|
Review on the Operator/Feynman diagram/Dessins d'enfant Correspondence
in Tensor Model
|
11 pages, 5 figures
| null | null | null |
hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
A short review of the Operator/Feynman diagram/dessin d'enfants
correspondence in the rank 3 tensor model is presented, and the cut & join
operation is given in the language of dessin d'enfants as a straightforward
development. We classify operators of the rank 3 tensor model up to level 5
with dessin d'enfants.
|
[
{
"created": "Sat, 11 Sep 2021 10:07:08 GMT",
"version": "v1"
}
] |
2021-09-14
|
[
[
"Itoyama",
"H.",
""
],
[
"Mironov",
"A.",
""
],
[
"Morozov",
"A.",
""
],
[
"Yoshioka",
"R.",
""
]
] |
A short review of the Operator/Feynman diagram/dessin d'enfants correspondence in the rank 3 tensor model is presented, and the cut & join operation is given in the language of dessin d'enfants as a straightforward development. We classify operators of the rank 3 tensor model up to level 5 with dessin d'enfants.
|
1705.07446
|
Gennady Lykasov I
|
A.P.Ierusalimov, G.I.Lykasov
|
Dielectron production in pion-nucleon reactions at intermediate energies
|
12 pages, 5 figures
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dielectron production in the $\pi N$ interaction at not large energies is
studied. The dominant contribution of the $\Delta$-isobar creation in the
intermediate state at incident pion momenta of about 0.3-0.4 GeV$/$c is shown.
The experimental distributions over the angle and effective mass $M_{e^+e_-}$
of the $e^+e^-$ pair are described satisfactorily. This stimulated us to
present theoretical predictions for the $M_{e^+e_-}$ distribution in the
process $\pi^- p\rightarrow ne^+e^-$ at different incident momenta, which could
be verified, for example, by the HADES experiments.
|
[
{
"created": "Sun, 21 May 2017 13:31:10 GMT",
"version": "v1"
}
] |
2017-05-23
|
[
[
"Ierusalimov",
"A. P.",
""
],
[
"Lykasov",
"G. I.",
""
]
] |
Dielectron production in the $\pi N$ interaction at not large energies is studied. The dominant contribution of the $\Delta$-isobar creation in the intermediate state at incident pion momenta of about 0.3-0.4 GeV$/$c is shown. The experimental distributions over the angle and effective mass $M_{e^+e_-}$ of the $e^+e^-$ pair are described satisfactorily. This stimulated us to present theoretical predictions for the $M_{e^+e_-}$ distribution in the process $\pi^- p\rightarrow ne^+e^-$ at different incident momenta, which could be verified, for example, by the HADES experiments.
|
hep-th/9412042
| null |
Janos Polonyi
|
Renormalization group and continuum limit in Quantum Mechanics
|
3 pg., presented at Lattice '94, Bielefeld
|
Nucl.Phys.Proc.Suppl. 42 (1995) 926-928
|
10.1016/0920-5632(95)00424-8
| null |
hep-th
| null |
The running coupling constants are introduced in Quantum Mechanics and their
evolution is described by the help of the renormalization group equation.
|
[
{
"created": "Mon, 5 Dec 1994 21:38:35 GMT",
"version": "v1"
}
] |
2009-10-28
|
[
[
"Polonyi",
"Janos",
""
]
] |
The running coupling constants are introduced in Quantum Mechanics and their evolution is described by the help of the renormalization group equation.
|
2301.04575
|
Pietro Oreglia
|
Vladimir Belavin, Pietro Oreglia, Juan Ramos Cabezas
|
Wilson lines construction of $\mathfrak{sl}_3$ toroidal conformal blocks
| null | null |
10.1016/j.nuclphysb.2023.116186
| null |
hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
We study $\mathcal{W}_3$ toroidal conformal blocks for degenerate primary
fields in AdS/CFT context. In the large central charge limit $\mathcal{W}_3$
algebra reduces to $\mathfrak{sl}_3$ algebra and $\mathfrak{sl}_3$ blocks are
defined as contributions to $\mathcal{W}_3$ blocks coming from the generators
of $\mathfrak{sl}_3$ subalgebra. We consider the construction of
$\mathfrak{sl}_3$ toroidal blocks in terms of Wilson lines operators of $3d$
Chern-Simons gravity in the thermal AdS$_3$ space-time. According to the
correspondence, degenerate primary fields are associated with Wilson lines
operators acting in the corresponding finite-dimensional $\mathfrak{sl}_3$
representations. We verify this dual construction for one-point toroidal block
using $\mathfrak{sl}_3$ tensor technique in the bulk theory and an algorithm
based on AGT correspondence in the boundary CFT.
|
[
{
"created": "Wed, 11 Jan 2023 17:06:27 GMT",
"version": "v1"
},
{
"created": "Tue, 28 Feb 2023 08:01:02 GMT",
"version": "v2"
}
] |
2023-05-03
|
[
[
"Belavin",
"Vladimir",
""
],
[
"Oreglia",
"Pietro",
""
],
[
"Cabezas",
"Juan Ramos",
""
]
] |
We study $\mathcal{W}_3$ toroidal conformal blocks for degenerate primary fields in AdS/CFT context. In the large central charge limit $\mathcal{W}_3$ algebra reduces to $\mathfrak{sl}_3$ algebra and $\mathfrak{sl}_3$ blocks are defined as contributions to $\mathcal{W}_3$ blocks coming from the generators of $\mathfrak{sl}_3$ subalgebra. We consider the construction of $\mathfrak{sl}_3$ toroidal blocks in terms of Wilson lines operators of $3d$ Chern-Simons gravity in the thermal AdS$_3$ space-time. According to the correspondence, degenerate primary fields are associated with Wilson lines operators acting in the corresponding finite-dimensional $\mathfrak{sl}_3$ representations. We verify this dual construction for one-point toroidal block using $\mathfrak{sl}_3$ tensor technique in the bulk theory and an algorithm based on AGT correspondence in the boundary CFT.
|
hep-ph/9912485
|
Subhendra Mohanty
|
J. A. Grifols, Eduard Masso and Subhendra Mohanty
|
Production of light pseudoscalars in external electromagnetic fields by
the Schwinger mechanism
|
25 pages including 9 figures. Version that matches published version
|
Phys.Rev. D65 (2002) 055004
|
10.1103/PhysRevD.65.055004
|
PRL-TH-99/006
|
hep-ph
| null |
We generalize the Schwinger mechanism and calculate the probability of the
decay of intense electromagnetic fields to pseudoscalar particles. We also
point out that our estimate for axion emission in a previous paper was
incorrect.
|
[
{
"created": "Thu, 23 Dec 1999 09:53:14 GMT",
"version": "v1"
},
{
"created": "Thu, 1 Mar 2001 09:27:44 GMT",
"version": "v2"
},
{
"created": "Tue, 23 Apr 2002 09:02:14 GMT",
"version": "v3"
}
] |
2009-10-31
|
[
[
"Grifols",
"J. A.",
""
],
[
"Masso",
"Eduard",
""
],
[
"Mohanty",
"Subhendra",
""
]
] |
We generalize the Schwinger mechanism and calculate the probability of the decay of intense electromagnetic fields to pseudoscalar particles. We also point out that our estimate for axion emission in a previous paper was incorrect.
|
0704.3308
|
Ilarion Melnikov
|
Nick Halmagyi, Ilarion V. Melnikov, and Savdeep Sethi
|
Instantons, Hypermultiplets and the Heterotic String
|
52 pages, LaTeX; references, some corrections and clarifications
added to the published version
|
JHEP0707:086,2007
|
10.1088/1126-6708/2007/07/086
|
EFI-07-11
|
hep-th
| null |
Hypermultiplet couplings in type IIA string theory on a Calabi-Yau space can
be quantum corrected by D2-brane instantons wrapping special Lagrangian cycles.
On the other hand, hypermultiplet couplings in the heterotic string on a K3
surface are corrected by world-sheet instantons wrapping curves. In a class of
examples, we relate these two sets of instanton corrections. We first present
an analogue of the c-map for the heterotic string via a dual flux
compactification of M-theory. Using this duality, we propose two ways of
capturing quantum corrections to hypermultiplets. We then use the orientifold
limit of certain F-theory compactifications to relate curves in K3 to special
Lagrangians in dual type IIA compactifications. We conclude with some results
from perturbative string theory for hypermultiplet F-terms and a conjecture
about the topology of brane instantons.
|
[
{
"created": "Wed, 25 Apr 2007 05:09:34 GMT",
"version": "v1"
},
{
"created": "Tue, 8 May 2007 22:29:08 GMT",
"version": "v2"
},
{
"created": "Wed, 1 Aug 2007 16:28:15 GMT",
"version": "v3"
}
] |
2008-11-26
|
[
[
"Halmagyi",
"Nick",
""
],
[
"Melnikov",
"Ilarion V.",
""
],
[
"Sethi",
"Savdeep",
""
]
] |
Hypermultiplet couplings in type IIA string theory on a Calabi-Yau space can be quantum corrected by D2-brane instantons wrapping special Lagrangian cycles. On the other hand, hypermultiplet couplings in the heterotic string on a K3 surface are corrected by world-sheet instantons wrapping curves. In a class of examples, we relate these two sets of instanton corrections. We first present an analogue of the c-map for the heterotic string via a dual flux compactification of M-theory. Using this duality, we propose two ways of capturing quantum corrections to hypermultiplets. We then use the orientifold limit of certain F-theory compactifications to relate curves in K3 to special Lagrangians in dual type IIA compactifications. We conclude with some results from perturbative string theory for hypermultiplet F-terms and a conjecture about the topology of brane instantons.
|
1209.3991
|
Massimo Giovannini
|
Massimo Giovannini
|
Secondary graviton spectra, second-order correlations and Bose-Einstein
enhancement
|
25 pages, no figures
| null |
10.1088/0264-9381/30/1/015009
|
CERN-PH-TH/2012-218
|
hep-th astro-ph.CO gr-qc hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Primary graviton spectra, produced via stimulated emission from an initial
Bose-Einstein distribution, are enhanced for typical scales larger than the
redshifted thermal wavelength. A mixed state of phonons induces a secondary
graviton spectrum which is hereunder computed in terms of three parameters
(i.e. the number of phonon species, the tensor-to-scalar ratio and the thermal
wavelengths of the mixture). The primary and secondary graviton spectra are
shown to be sensitive, respectively, to the first-order and second-order
correlation properties of the initial quantum mixture so that the semiclassical
theory is argued to be generally inadequate in this context. For particular
values of the parameters the secondary contribution may turn out to be
comparable with the primary spectrum over large-scales.
|
[
{
"created": "Tue, 18 Sep 2012 15:30:10 GMT",
"version": "v1"
}
] |
2015-06-11
|
[
[
"Giovannini",
"Massimo",
""
]
] |
Primary graviton spectra, produced via stimulated emission from an initial Bose-Einstein distribution, are enhanced for typical scales larger than the redshifted thermal wavelength. A mixed state of phonons induces a secondary graviton spectrum which is hereunder computed in terms of three parameters (i.e. the number of phonon species, the tensor-to-scalar ratio and the thermal wavelengths of the mixture). The primary and secondary graviton spectra are shown to be sensitive, respectively, to the first-order and second-order correlation properties of the initial quantum mixture so that the semiclassical theory is argued to be generally inadequate in this context. For particular values of the parameters the secondary contribution may turn out to be comparable with the primary spectrum over large-scales.
|
1111.0198
|
A. Yu. Petrov
|
T. Mariz, J. R. Nascimento, A. Yu. Petrov
|
On the perturbative generation of the higher-derivative Lorentz-breaking
terms
|
12 pages, version accepted to PRD
|
Phys. Rev. D 85, 125003 (2012)
|
10.1103/PhysRevD.85.125003
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we describe the perturbative generation of the
higher-derivative Lorentz-breaking terms for the gauge field, that is, the
Myers-Pospelov term and the higher-derivative Carroll-Field-Jackiw term. These
terms are explicitly calculated in the one-loop approximation and shown to be
finite and ambiguous.
|
[
{
"created": "Tue, 1 Nov 2011 13:22:07 GMT",
"version": "v1"
},
{
"created": "Wed, 9 May 2012 15:10:47 GMT",
"version": "v2"
}
] |
2015-06-03
|
[
[
"Mariz",
"T.",
""
],
[
"Nascimento",
"J. R.",
""
],
[
"Petrov",
"A. Yu.",
""
]
] |
In this paper, we describe the perturbative generation of the higher-derivative Lorentz-breaking terms for the gauge field, that is, the Myers-Pospelov term and the higher-derivative Carroll-Field-Jackiw term. These terms are explicitly calculated in the one-loop approximation and shown to be finite and ambiguous.
|
hep-th/9606140
|
Jan Ambjorn
|
J. Ambjorn, G.K. Savvidy and K.G. Savvidy
|
Alternative actions for quantum gravity and the intrinsic rigidity of
the spacetime
|
21 pages, Latex (uses psfig.sty and pictex.sty), five figures
|
Nucl.Phys. B486 (1997) 390-412
|
10.1016/S0550-3213(96)00660-8
|
NBI-HE-96-22
|
hep-th gr-qc hep-lat
| null |
Using the Steiner-Weyl expansion formula for parallel manifolds and the so
called gonihedric principle we find a large class of discrete integral
invariants which are defined on simplicial manifolds of various dimensions.
These integral invariants include the discrete version of the Hilbert-Einstein
action found by Regge and alternative actions which are linear with respect to
the size of the manifold. In addition the concept of generalized deficit angles
appear in a natural way and is related to higher order curvature terms. These
angles may be used to introduce various aspects of rigidity in simplicial
quantum gravity.
|
[
{
"created": "Fri, 21 Jun 1996 21:05:40 GMT",
"version": "v1"
}
] |
2009-10-30
|
[
[
"Ambjorn",
"J.",
""
],
[
"Savvidy",
"G. K.",
""
],
[
"Savvidy",
"K. G.",
""
]
] |
Using the Steiner-Weyl expansion formula for parallel manifolds and the so called gonihedric principle we find a large class of discrete integral invariants which are defined on simplicial manifolds of various dimensions. These integral invariants include the discrete version of the Hilbert-Einstein action found by Regge and alternative actions which are linear with respect to the size of the manifold. In addition the concept of generalized deficit angles appear in a natural way and is related to higher order curvature terms. These angles may be used to introduce various aspects of rigidity in simplicial quantum gravity.
|
1703.08789
|
Shohei Okawa
|
Shohei Okawa, Yuji Omura
|
Hidden sector behind the CKM matrix
|
23 pages, 8 figures, 4 tables; references added, some typos
corrected, version published in PRD
|
Phys. Rev. D 96, 035012 (2017)
|
10.1103/PhysRevD.96.035012
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The small quark mixing, described by the Cabibbo-Kobayashi-Maskawa (CKM)
matrix in the Standard Model, may be a clue to reveal new physics around the
TeV scale. We consider a simple scenario that extra particles in a hidden
sector radiatively mediate the flavor violation to the quark sector around the
TeV scale and effectively realize the observed CKM matrix. The lightest
particle in the hidden sector, whose contribution to the CKM matrix is expected
to be dominant, is a good dark matter (DM) candidate, so we focus on the
contribution, and discuss the DM physics. In this scenario, there is an
explicit relation between the CKM matrix and flavor violating couplings, such
as four-quark couplings, because both are radiatively induced by the particles
in the hidden sector. Then, we can explicitly find the DM mass region and the
size of Yukawa couplings between the DM and quarks, based on the study of
flavor physics and DM physics. In conclusion, we show that DM mass in our
scenario is around the TeV scale, and the Yukawa couplings are between ${\cal
O}(0.01)$ and ${\cal O}(1)$. The spin-independent DM scattering cross section
is estimated as ${\cal O}(10^{-9})$ [pb]. An extra colored particle is also
predicted at the ${\cal O}(10)$ TeV scale.
|
[
{
"created": "Sun, 26 Mar 2017 08:57:59 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Aug 2017 03:56:10 GMT",
"version": "v2"
}
] |
2017-08-29
|
[
[
"Okawa",
"Shohei",
""
],
[
"Omura",
"Yuji",
""
]
] |
The small quark mixing, described by the Cabibbo-Kobayashi-Maskawa (CKM) matrix in the Standard Model, may be a clue to reveal new physics around the TeV scale. We consider a simple scenario that extra particles in a hidden sector radiatively mediate the flavor violation to the quark sector around the TeV scale and effectively realize the observed CKM matrix. The lightest particle in the hidden sector, whose contribution to the CKM matrix is expected to be dominant, is a good dark matter (DM) candidate, so we focus on the contribution, and discuss the DM physics. In this scenario, there is an explicit relation between the CKM matrix and flavor violating couplings, such as four-quark couplings, because both are radiatively induced by the particles in the hidden sector. Then, we can explicitly find the DM mass region and the size of Yukawa couplings between the DM and quarks, based on the study of flavor physics and DM physics. In conclusion, we show that DM mass in our scenario is around the TeV scale, and the Yukawa couplings are between ${\cal O}(0.01)$ and ${\cal O}(1)$. The spin-independent DM scattering cross section is estimated as ${\cal O}(10^{-9})$ [pb]. An extra colored particle is also predicted at the ${\cal O}(10)$ TeV scale.
|
hep-th/9811190
| null |
Hai-cang Ren (The Rockefeller University)
|
Path Integrals, BRST Identities and Regularization Schemes in
Nonstandard Gauges
|
40 pages and 2 figures
|
Annals Phys. 283 (2000) 57-93
|
10.1006/aphy.2000.6046
|
RU98-7-B
|
hep-th
| null |
The path integral of a gauge theory is studied in Coulomb-like gauges. The
Christ-Lee terms of operator ordering are reproduced {\it{within}} the path
integration framework. In the presence of fermions, a new operator term, in
addition to that of Christ-Lee, is discovered. Such kind of terms is found to
be instrumental in restoring the invariance of the effective Lagrangian under a
field dependent gauge transformation, which underlies the BRST symmetry. A
unitary regularization scheme which maintains manifest BRST symmetry and is
free from energy divergences is proposed for a nonabelian gauge field.
|
[
{
"created": "Fri, 20 Nov 1998 21:54:11 GMT",
"version": "v1"
}
] |
2009-10-31
|
[
[
"Ren",
"Hai-cang",
"",
"The Rockefeller University"
]
] |
The path integral of a gauge theory is studied in Coulomb-like gauges. The Christ-Lee terms of operator ordering are reproduced {\it{within}} the path integration framework. In the presence of fermions, a new operator term, in addition to that of Christ-Lee, is discovered. Such kind of terms is found to be instrumental in restoring the invariance of the effective Lagrangian under a field dependent gauge transformation, which underlies the BRST symmetry. A unitary regularization scheme which maintains manifest BRST symmetry and is free from energy divergences is proposed for a nonabelian gauge field.
|
2301.07035
|
Luigi Guerrini
|
Luigi Guerrini
|
On protected defect correlators in 3d $\mathcal{N}\ge4$ theories
|
25 pages, 2 figures, references and comments added, typos corrected
| null | null | null |
hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
We study and compute supersymmetric observables for line defects in 3d
$\mathcal{N}\ge4$ theories. Our setup is a novel supersymmetric configuration
involving line operators and local operators living on a linked circle. The
algebra of the local operators is described by a topological quantum mechanics.
For operators belonging to conserved current multiplets, we propose an exact
formula for their correlation functions based on a Ward identity for integrated
correlators. Our formula gives a general recipe to compute the bremsstrahlung
function for any $\frac{1}{3}$-BPS lines in $\mathcal{N}=6$ SCFTs. We apply our
relation to the $\frac{1}{2}$-BPS Wilson loop in the ABJM model, showing the
validity of previous computations. Furthermore, our construction allows us to
explore higher points correlators. As an example, we compute the two-point
function of the stress tensor multiplet correlators in ABJM theory in the
presence of the Wilson line. We also present some perturbative checks of our
formulae.
|
[
{
"created": "Tue, 17 Jan 2023 17:34:06 GMT",
"version": "v1"
},
{
"created": "Tue, 7 Mar 2023 14:52:09 GMT",
"version": "v2"
},
{
"created": "Wed, 18 Oct 2023 10:27:05 GMT",
"version": "v3"
}
] |
2023-10-19
|
[
[
"Guerrini",
"Luigi",
""
]
] |
We study and compute supersymmetric observables for line defects in 3d $\mathcal{N}\ge4$ theories. Our setup is a novel supersymmetric configuration involving line operators and local operators living on a linked circle. The algebra of the local operators is described by a topological quantum mechanics. For operators belonging to conserved current multiplets, we propose an exact formula for their correlation functions based on a Ward identity for integrated correlators. Our formula gives a general recipe to compute the bremsstrahlung function for any $\frac{1}{3}$-BPS lines in $\mathcal{N}=6$ SCFTs. We apply our relation to the $\frac{1}{2}$-BPS Wilson loop in the ABJM model, showing the validity of previous computations. Furthermore, our construction allows us to explore higher points correlators. As an example, we compute the two-point function of the stress tensor multiplet correlators in ABJM theory in the presence of the Wilson line. We also present some perturbative checks of our formulae.
|
2308.14682
|
Amit Tiwari
|
Qaisar Shafi, Amit Tiwari and Cem Salih Un
|
Muon $g-2$ and dark matter in Supersymmetric $SU(4)_c \times SU(2)_L
\times SU(2)_R$
| null | null | null | null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
The latest FermiLab muon $g-2$ result shows a $5\sigma$ discrepancy with a
``widely advertised" Standard Model prediction. We consider a supersymmetric
$SU(4)_c \times SU(2)_L \times SU(2)_R$ model in which this discrepancy is
resolved by including contributions to muon $g-2$ from a relatively light SUSY
sector. A variety of realistic coannihilation scenarios can reproduce the
observed dark matter relic abundance. With a significantly reduced discrepancy,
of order $1 \sigma$ or less, the Higgsino-like dark matter solutions are also
viable. We provide benchmark points for these solutions that will be probed in
the direct detection dark matter experiments and collider searches.
|
[
{
"created": "Mon, 28 Aug 2023 16:17:28 GMT",
"version": "v1"
}
] |
2023-08-29
|
[
[
"Shafi",
"Qaisar",
""
],
[
"Tiwari",
"Amit",
""
],
[
"Un",
"Cem Salih",
""
]
] |
The latest FermiLab muon $g-2$ result shows a $5\sigma$ discrepancy with a ``widely advertised" Standard Model prediction. We consider a supersymmetric $SU(4)_c \times SU(2)_L \times SU(2)_R$ model in which this discrepancy is resolved by including contributions to muon $g-2$ from a relatively light SUSY sector. A variety of realistic coannihilation scenarios can reproduce the observed dark matter relic abundance. With a significantly reduced discrepancy, of order $1 \sigma$ or less, the Higgsino-like dark matter solutions are also viable. We provide benchmark points for these solutions that will be probed in the direct detection dark matter experiments and collider searches.
|
hep-ph/9701269
| null |
Vadim A. Kuzmin
|
A Simultaneous Solution to Baryogenesis and Dark Matter Problems
|
Latex file. Talk at Workshop on 'Aspects of Dark Matter in Astro- and
Particle Physics', Heidelberg, Germany, September 16-20, 1996; to be
published in Proc. of Workshop by World-Scientific, Singapore, 1997
|
Phys.Part.Nucl.29:257-265,1998; Fiz.Elem.Chast.Atom.Yadra
29:637-658,1998
|
10.1134/1.953070
| null |
hep-ph
| null |
A new concept of generation of the cosmological baryon excess along with the
cold dark matter (CDM) in the Universe is proposed and corresponding scenarios
are outlined. Possible realizations of the idea in the framework of
supersymmetric models are considered and constraints (predictions) on masses of
sparticles compatible with the viability of the scenario are derived. Mulitiple
predictions might be extracted from the concept. In particular, we predict a
quite natural existence of a charge asymmetric component of CDM. A $\sim
10^{-2}$ part of CDM might exist in the form of electrically charged relic
particles with masses $m \simeq 1$ TeV. They are negatively charged and are
dresses by protons. This conjecture provides a rich field of immediate search
for these particles. The charge symmetric component of CDM might be represented
by very light, $m \approx 2$ GeV, very weakly interacting particles like
right-handed sneutrinos ( so recoils expected are rare and have quite small
energies, $E_{recoil} \sim 1$ KeV.) This leads by the way to prediction of
long-living (charged) sparticles. Some new experimental proposals for
non-traditional search of cold dark matter particles are mentioned.
|
[
{
"created": "Sun, 12 Jan 1997 00:05:27 GMT",
"version": "v1"
}
] |
2014-11-17
|
[
[
"Kuzmin",
"Vadim A.",
""
]
] |
A new concept of generation of the cosmological baryon excess along with the cold dark matter (CDM) in the Universe is proposed and corresponding scenarios are outlined. Possible realizations of the idea in the framework of supersymmetric models are considered and constraints (predictions) on masses of sparticles compatible with the viability of the scenario are derived. Mulitiple predictions might be extracted from the concept. In particular, we predict a quite natural existence of a charge asymmetric component of CDM. A $\sim 10^{-2}$ part of CDM might exist in the form of electrically charged relic particles with masses $m \simeq 1$ TeV. They are negatively charged and are dresses by protons. This conjecture provides a rich field of immediate search for these particles. The charge symmetric component of CDM might be represented by very light, $m \approx 2$ GeV, very weakly interacting particles like right-handed sneutrinos ( so recoils expected are rare and have quite small energies, $E_{recoil} \sim 1$ KeV.) This leads by the way to prediction of long-living (charged) sparticles. Some new experimental proposals for non-traditional search of cold dark matter particles are mentioned.
|
2110.03961
|
Raghunath Sahoo
|
Dushmanta Sahu, Aditya Nath Mishra, and Raghunath Sahoo
|
Study of the jet transport coefficient at the Large Hadron Collider
energies using Color String Percolation Model
|
LHCP Proceedings to appear in PoS
| null | null | null |
hep-ph hep-ex nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In order to have a better understanding of the matter formed in
ultra-relativistic collisions, we estimate the jet transport coefficient, $\hat
q$, within the Color Sting Percolation Model (CSPM) for various multiplicity
classes in proton-proton collisions and centrality classes in nucleus-nucleus
collisions at the Large Hadron Collider energies. We study $\hat q$ as a
function of final state charged-particle multiplicity and initial percolation
temperature. Finally, we compare our obtained results with those calculated
from the JET collaboration.
|
[
{
"created": "Fri, 8 Oct 2021 08:22:14 GMT",
"version": "v1"
}
] |
2021-10-11
|
[
[
"Sahu",
"Dushmanta",
""
],
[
"Mishra",
"Aditya Nath",
""
],
[
"Sahoo",
"Raghunath",
""
]
] |
In order to have a better understanding of the matter formed in ultra-relativistic collisions, we estimate the jet transport coefficient, $\hat q$, within the Color Sting Percolation Model (CSPM) for various multiplicity classes in proton-proton collisions and centrality classes in nucleus-nucleus collisions at the Large Hadron Collider energies. We study $\hat q$ as a function of final state charged-particle multiplicity and initial percolation temperature. Finally, we compare our obtained results with those calculated from the JET collaboration.
|
hep-th/0206113
|
Jens Fjelstad
|
Jens Fjelstad, Stephen Hwang, Teresia Mansson
|
CFT description of three-dimensional Kerr-de Sitter spacetime
|
12 pages, v2: references added and some structural changes
|
Nucl.Phys. B641 (2002) 376-392
|
10.1016/S0550-3213(02)00588-6
| null |
hep-th gr-qc
| null |
We describe three-dimensional Kerr-de Sitter space using similar methods as
recently applied to the BTZ black hole. A rigorous form of the classical
connection between gravity in three dimensions and two-dimensional conformal
field theory is employed, where the fundamental degrees of freedom are
described in terms of two dependent SL(2,C) currents. In contrast to the BTZ
case, however, quantization does not give the Bekenstein-Hawking entropy
connected to the cosmological horizon of Kerr-de Sitter space.
|
[
{
"created": "Thu, 13 Jun 2002 12:55:53 GMT",
"version": "v1"
},
{
"created": "Wed, 10 Jul 2002 14:56:19 GMT",
"version": "v2"
}
] |
2009-11-07
|
[
[
"Fjelstad",
"Jens",
""
],
[
"Hwang",
"Stephen",
""
],
[
"Mansson",
"Teresia",
""
]
] |
We describe three-dimensional Kerr-de Sitter space using similar methods as recently applied to the BTZ black hole. A rigorous form of the classical connection between gravity in three dimensions and two-dimensional conformal field theory is employed, where the fundamental degrees of freedom are described in terms of two dependent SL(2,C) currents. In contrast to the BTZ case, however, quantization does not give the Bekenstein-Hawking entropy connected to the cosmological horizon of Kerr-de Sitter space.
|
2103.05218
|
Yu-Chen Guo
|
Hua-Ying Zhang, Chong-Xing Yue, Yu-Chen Guo, Shuo Yang
|
Searching for axion-like particles at future electron-positron colliders
|
16 pages, 9 figures, 3 tables. Submitted to Physical Review D
| null |
10.1103/PhysRevD.104.096008
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the prospects for discovering axion-like particles (ALPs) via
a light-by-light (LBL) scattering at two colliders, the future circular
collider (FCC-ee) and circular electron-positron collider (CEPC). The promising
sensitivities to the effective ALP-photon coupling $g_{a\gamma\gamma}$ are
obtained. Our numerical results show that the FCC-ee and CEPC might be more
sensitive to the ALPs with mass 2 GeV $\sim$ 10 GeV than the LHC and CLIC.
|
[
{
"created": "Tue, 9 Mar 2021 04:38:45 GMT",
"version": "v1"
},
{
"created": "Thu, 3 Jun 2021 03:19:03 GMT",
"version": "v2"
},
{
"created": "Sat, 16 Oct 2021 06:45:28 GMT",
"version": "v3"
}
] |
2021-11-24
|
[
[
"Zhang",
"Hua-Ying",
""
],
[
"Yue",
"Chong-Xing",
""
],
[
"Guo",
"Yu-Chen",
""
],
[
"Yang",
"Shuo",
""
]
] |
We investigate the prospects for discovering axion-like particles (ALPs) via a light-by-light (LBL) scattering at two colliders, the future circular collider (FCC-ee) and circular electron-positron collider (CEPC). The promising sensitivities to the effective ALP-photon coupling $g_{a\gamma\gamma}$ are obtained. Our numerical results show that the FCC-ee and CEPC might be more sensitive to the ALPs with mass 2 GeV $\sim$ 10 GeV than the LHC and CLIC.
|
2202.08626
|
Yong-Hui Lin
|
Yong-Hui Lin
|
Proton charge radius from a dispersive analysis of the experimental data
over the space- and time-like regions
|
10 pages, 6 figures, contribution to Chiral Dynamics 2021
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a dispersion theoretical analysis of the experimental data on the
electromagnetic form factors of the nucleon covering both the space- and
time-like regions. The nucleon form factors over the full range of momentum
transfers and the nucleon radius are extracted with high precision. The
statistical uncertainties of the extracted form factors and radius are
estimated using the bootstrap method, while systematic errors are determined
from variations of the spectral functions. For the proton charge radius, we
find $r_E^p = 0.840^{+0.003}_{-0.002}{}^{+0.002}_{-0.002}$~fm, in line with
previous analyses of spacelike data alone and also the muonic Lamb shift
determination.
|
[
{
"created": "Thu, 17 Feb 2022 12:21:51 GMT",
"version": "v1"
}
] |
2022-02-18
|
[
[
"Lin",
"Yong-Hui",
""
]
] |
We present a dispersion theoretical analysis of the experimental data on the electromagnetic form factors of the nucleon covering both the space- and time-like regions. The nucleon form factors over the full range of momentum transfers and the nucleon radius are extracted with high precision. The statistical uncertainties of the extracted form factors and radius are estimated using the bootstrap method, while systematic errors are determined from variations of the spectral functions. For the proton charge radius, we find $r_E^p = 0.840^{+0.003}_{-0.002}{}^{+0.002}_{-0.002}$~fm, in line with previous analyses of spacelike data alone and also the muonic Lamb shift determination.
|
1402.1821
|
Allic Sivaramakrishnan
|
Allic Sivaramakrishnan
|
Color-Kinematic Duality in ABJM Theory Without Amplitude Relations
|
21 pages, 5 figures, ancillary pdf and mathematica-friendly text file
containing amplitude-numerator decomposition and numerator relations
|
Int.J.Mod.Phys. A32 (2017) no.02n03, 1750002
|
10.1142/S0217751X17500026
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explicitly show that the Bern-Carrasco-Johansson color-kinematic duality
holds at tree level through at least eight points in
Aharony-Bergman-Jafferis-Maldacena theory with gauge group SU(N) x SU(N). At
six points we give the explicit form of numerators in terms of amplitudes,
displaying the generalized gauge freedom that leads to amplitude relations.
However, at eight points no amplitude relations follow from the duality, so the
diagram numerators are fixed unique functions of partial amplitudes. We provide
the explicit amplitude-numerator decomposition and the numerator relations for
eight-point amplitudes.
|
[
{
"created": "Sat, 8 Feb 2014 04:53:16 GMT",
"version": "v1"
}
] |
2017-06-27
|
[
[
"Sivaramakrishnan",
"Allic",
""
]
] |
We explicitly show that the Bern-Carrasco-Johansson color-kinematic duality holds at tree level through at least eight points in Aharony-Bergman-Jafferis-Maldacena theory with gauge group SU(N) x SU(N). At six points we give the explicit form of numerators in terms of amplitudes, displaying the generalized gauge freedom that leads to amplitude relations. However, at eight points no amplitude relations follow from the duality, so the diagram numerators are fixed unique functions of partial amplitudes. We provide the explicit amplitude-numerator decomposition and the numerator relations for eight-point amplitudes.
|
1405.2775
|
Sibo Zheng
|
Sibo Zheng
|
Dynamical Generation of the Weak Scale and Inflation in High-Scale
Supersymmetry
|
5 pages. Comments are welcome
| null | null | null |
hep-ph astro-ph.CO hep-th
|
http://creativecommons.org/licenses/by/3.0/
|
Combination of Plank and BICEP2 data reported that tensor to scalar ratio
$r\simeq 0.16$ and scalar spectral index $n_{s}\simeq 0.96$. In this short
note, it is shown that chaotic inflation with quadratic potential, which
perfectly accounts for present fit to $r$ and $n_s$, and relatively heavy Higgs
mass for fine-tuned MSSM, are both suggested to be consequences of high-scale
supersymmetry (SUSY) breaking. Following this idea, we find that inflaton mass
is of same order as soft mass, flatness of inflation potential doesn't need a
shift symmetry, and scale of inflation energy density automatically agrees with
SUSY-breaking scale. A simple realization of such high-scale SUSY breaking, in
which inflaton with tri-linear superpotential serves as {\it modulus}, is
discussed in terms of ISS-like model.
|
[
{
"created": "Mon, 12 May 2014 14:20:56 GMT",
"version": "v1"
},
{
"created": "Tue, 13 May 2014 07:09:29 GMT",
"version": "v2"
},
{
"created": "Thu, 22 May 2014 09:03:33 GMT",
"version": "v3"
},
{
"created": "Mon, 9 Jun 2014 07:00:49 GMT",
"version": "v4"
},
{
"created": "Tue, 24 Feb 2015 03:20:38 GMT",
"version": "v5"
}
] |
2015-02-25
|
[
[
"Zheng",
"Sibo",
""
]
] |
Combination of Plank and BICEP2 data reported that tensor to scalar ratio $r\simeq 0.16$ and scalar spectral index $n_{s}\simeq 0.96$. In this short note, it is shown that chaotic inflation with quadratic potential, which perfectly accounts for present fit to $r$ and $n_s$, and relatively heavy Higgs mass for fine-tuned MSSM, are both suggested to be consequences of high-scale supersymmetry (SUSY) breaking. Following this idea, we find that inflaton mass is of same order as soft mass, flatness of inflation potential doesn't need a shift symmetry, and scale of inflation energy density automatically agrees with SUSY-breaking scale. A simple realization of such high-scale SUSY breaking, in which inflaton with tri-linear superpotential serves as {\it modulus}, is discussed in terms of ISS-like model.
|
1001.2535
|
Pierre Vanhove
|
Michael B. Green, Jorge G. Russo, Pierre Vanhove
|
Automorphic properties of low energy string amplitudes in various
dimensions
|
80 pages. 1 figure. v2:Typos corrected, footnotes amended and small
clarifications. v3: minor corrections. Version to appear in Phys Rev D
|
Phys.Rev.D81:086008,2010
|
10.1103/PhysRevD.81.086008
|
DAMTP-2010-1, IPHT-T-10/001, IHES/P/10/01, ICCUB-10-002
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper explores the moduli-dependent coefficients of higher derivative
interactions that appear in the low-energy expansion of the four-graviton
amplitude of maximally supersymmetric string theory compactified on a d-torus.
These automorphic functions are determined for terms up to order D^6R^4 and
various values of d by imposing a variety of consistency conditions. They
satisfy Laplace eigenvalue equations with or without source terms, whose
solutions are given in terms of Eisenstein series, or more general automorphic
functions, for certain parabolic subgroups of the relevant U-duality groups.
The ultraviolet divergences of the corresponding supergravity field theory
limits are encoded in various logarithms, although the string theory
expressions are finite. This analysis includes intriguing representations of
SL(d) and SO(d,d) Eisenstein series in terms of toroidally compactified one and
two-loop string and supergravity amplitudes.
|
[
{
"created": "Thu, 14 Jan 2010 19:28:50 GMT",
"version": "v1"
},
{
"created": "Fri, 19 Feb 2010 18:45:56 GMT",
"version": "v2"
},
{
"created": "Thu, 1 Apr 2010 19:40:12 GMT",
"version": "v3"
}
] |
2015-03-13
|
[
[
"Green",
"Michael B.",
""
],
[
"Russo",
"Jorge G.",
""
],
[
"Vanhove",
"Pierre",
""
]
] |
This paper explores the moduli-dependent coefficients of higher derivative interactions that appear in the low-energy expansion of the four-graviton amplitude of maximally supersymmetric string theory compactified on a d-torus. These automorphic functions are determined for terms up to order D^6R^4 and various values of d by imposing a variety of consistency conditions. They satisfy Laplace eigenvalue equations with or without source terms, whose solutions are given in terms of Eisenstein series, or more general automorphic functions, for certain parabolic subgroups of the relevant U-duality groups. The ultraviolet divergences of the corresponding supergravity field theory limits are encoded in various logarithms, although the string theory expressions are finite. This analysis includes intriguing representations of SL(d) and SO(d,d) Eisenstein series in terms of toroidally compactified one and two-loop string and supergravity amplitudes.
|
2010.10544
|
Avner Karasik
|
Avner Karasik
|
Vector dominance, one flavored baryons, and QCD domain walls from the
"hidden" Wess-Zumino term
| null |
SciPost Phys. 10, 138 (2021)
|
10.21468/SciPostPhys.10.6.138
| null |
hep-th hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We further explore a recent proposal that the vector mesons in QCD have a
special role as Chern-Simons fields on various QCD objects such as domain walls
and the one flavored baryons. We compute contributions to domain wall theories
and to the baryon current coming from a generalized Wess-Zumino term including
vector mesons. The conditions that lead to the expected Chern-Simons terms and
the correct spectrum of baryons, coincide with the conditions for vector meson
dominance. This observation provides a theoretical explanation to the
phenomenological principle of vector dominance, as well as an experimental
evidence for the identification of vector mesons as the Chern-Simons fields. By
deriving the Chern-Simons theories directly from an action, we obtain new
results about QCD domain walls. One conclusion is the existence of a first
order phase transition between domain walls as a function of the quarks'
masses. We also discuss applications of our results to Seiberg duality between
gluons and vector mesons and provide new evidence supporting the duality.
|
[
{
"created": "Tue, 20 Oct 2020 18:00:15 GMT",
"version": "v1"
},
{
"created": "Mon, 7 Dec 2020 16:45:51 GMT",
"version": "v2"
}
] |
2022-01-11
|
[
[
"Karasik",
"Avner",
""
]
] |
We further explore a recent proposal that the vector mesons in QCD have a special role as Chern-Simons fields on various QCD objects such as domain walls and the one flavored baryons. We compute contributions to domain wall theories and to the baryon current coming from a generalized Wess-Zumino term including vector mesons. The conditions that lead to the expected Chern-Simons terms and the correct spectrum of baryons, coincide with the conditions for vector meson dominance. This observation provides a theoretical explanation to the phenomenological principle of vector dominance, as well as an experimental evidence for the identification of vector mesons as the Chern-Simons fields. By deriving the Chern-Simons theories directly from an action, we obtain new results about QCD domain walls. One conclusion is the existence of a first order phase transition between domain walls as a function of the quarks' masses. We also discuss applications of our results to Seiberg duality between gluons and vector mesons and provide new evidence supporting the duality.
|
hep-th/0307188
|
Edward Teo
|
Edward Teo
|
Black diholes in five dimensions
|
21 pages, 2 figures; reference added
|
Phys.Rev. D68 (2003) 084003
|
10.1103/PhysRevD.68.084003
| null |
hep-th gr-qc
| null |
Using a generalized Weyl formalism, we show how stationary, axisymmetric
solutions of the four-dimensional vacuum Einstein equation can be turned into
static, axisymmetric solutions of five-dimensional dilaton gravity coupled to a
two-form gauge field. This procedure is then used to obtain new solutions of
the latter theory describing pairs of extremal magnetic black holes with
opposite charges, known as black diholes. These diholes are kept in static
equilibrium by membrane-like conical singularities stretching along two
different directions. We also present solutions describing diholes suspended in
a background magnetic field, and with unbalanced charges.
|
[
{
"created": "Sat, 19 Jul 2003 13:37:53 GMT",
"version": "v1"
},
{
"created": "Tue, 16 Sep 2003 01:41:48 GMT",
"version": "v2"
}
] |
2009-11-10
|
[
[
"Teo",
"Edward",
""
]
] |
Using a generalized Weyl formalism, we show how stationary, axisymmetric solutions of the four-dimensional vacuum Einstein equation can be turned into static, axisymmetric solutions of five-dimensional dilaton gravity coupled to a two-form gauge field. This procedure is then used to obtain new solutions of the latter theory describing pairs of extremal magnetic black holes with opposite charges, known as black diholes. These diholes are kept in static equilibrium by membrane-like conical singularities stretching along two different directions. We also present solutions describing diholes suspended in a background magnetic field, and with unbalanced charges.
|
2205.05022
|
Michael Zantedeschi
|
Goran Senjanovi\'c and Michael Zantedeschi
|
$SU(5)$ grand unification and $W$-boson mass
|
7 pages, 3 figures, v3: Published version
| null |
10.1016/j.physletb.2022.137653
| null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
A realistic extension of the minimal $SU(5)$ theory consisting of the
addition of an adjoint fermion is known to predict light real fermion and
scalar weak triplets, potentially accessible at the LHC. These particles, in
addition to playing a key role in gauge coupling unification, have profound
phenomenological implications. The fermion triplet, that through the seesaw
mechanism offers a testable origin of neutrino mass, has been already
extensively discussed. The scalar triplet develops a vacuum expectation value
that modifies the $W$-boson mass. We show that its low-energy effective theory
is remarkably predictive: in the leading approximation, all the relevant
physical processes involving the scalar triplet depend only on its mass and the
deviation from the Standard Model $W$-mass value.
|
[
{
"created": "Tue, 10 May 2022 16:35:36 GMT",
"version": "v1"
},
{
"created": "Tue, 27 Sep 2022 12:35:03 GMT",
"version": "v2"
},
{
"created": "Tue, 10 Jan 2023 16:17:12 GMT",
"version": "v3"
}
] |
2023-01-11
|
[
[
"Senjanović",
"Goran",
""
],
[
"Zantedeschi",
"Michael",
""
]
] |
A realistic extension of the minimal $SU(5)$ theory consisting of the addition of an adjoint fermion is known to predict light real fermion and scalar weak triplets, potentially accessible at the LHC. These particles, in addition to playing a key role in gauge coupling unification, have profound phenomenological implications. The fermion triplet, that through the seesaw mechanism offers a testable origin of neutrino mass, has been already extensively discussed. The scalar triplet develops a vacuum expectation value that modifies the $W$-boson mass. We show that its low-energy effective theory is remarkably predictive: in the leading approximation, all the relevant physical processes involving the scalar triplet depend only on its mass and the deviation from the Standard Model $W$-mass value.
|
hep-ph/9911354
|
Patrik Eden
|
P. Eden
|
Observables Probing the Perturbative-Nonperturbative Transition Region
in QCD
|
3 pages, 2 ps figures. Talk at EPS-HEP99, July 14-21 1999, Tampere,
Finland
| null | null |
NORDITA 1999/74 HE
|
hep-ph
| null |
Benefiting from the high statistics from $e^+e^-$ experiments at the $Z^0$
resonance, it is possible to impose strong two-jet cuts on the data without
losing the statistical significance. In these events perturbative activity is
suppressed and hadronization effects can be more prominent. I give two examples
of observables that can be important tools for a more detailed study of the
hadronization mechanism.
|
[
{
"created": "Mon, 15 Nov 1999 10:10:07 GMT",
"version": "v1"
}
] |
2016-09-06
|
[
[
"Eden",
"P.",
""
]
] |
Benefiting from the high statistics from $e^+e^-$ experiments at the $Z^0$ resonance, it is possible to impose strong two-jet cuts on the data without losing the statistical significance. In these events perturbative activity is suppressed and hadronization effects can be more prominent. I give two examples of observables that can be important tools for a more detailed study of the hadronization mechanism.
|
hep-th/0004062
|
Corneliu Sochichiu
|
C. Sochichiu
|
M[any] Vacua of IIB
|
17 pages, Virasoro algebra explicitely given, LaTeX style change,
minor text changes
|
JHEP 0005 (2000) 026
|
10.1088/1126-6708/2000/05/026
| null |
hep-th gr-qc hep-lat
| null |
Description of the spectrum of fluctuations around a commutative vacuum
solution, as well as around a solution with degenerate commutator in IIB matrix
model is given in terms of supersymmetric Yang-Mills (YM) model. We construct
explicitly the map from Hermitian matrices to YM fields and study the
dependence of the spectrum and respective YM model on the symmetries of the
solution. The gauge algebra of the YM model is shown to contain local
reparameterisation algebra as well as Virasoro one.
|
[
{
"created": "Mon, 10 Apr 2000 14:57:32 GMT",
"version": "v1"
},
{
"created": "Tue, 18 Apr 2000 06:34:55 GMT",
"version": "v2"
}
] |
2009-10-31
|
[
[
"Sochichiu",
"C.",
""
]
] |
Description of the spectrum of fluctuations around a commutative vacuum solution, as well as around a solution with degenerate commutator in IIB matrix model is given in terms of supersymmetric Yang-Mills (YM) model. We construct explicitly the map from Hermitian matrices to YM fields and study the dependence of the spectrum and respective YM model on the symmetries of the solution. The gauge algebra of the YM model is shown to contain local reparameterisation algebra as well as Virasoro one.
|
1011.0699
|
Myron Bander
|
Myron Bander
|
Anomaly breaking of de Sitter symmetry
|
6 pages
| null | null |
UCI-TR-2010-27
|
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
To one loop order, interacting boson fields on de Sitter space have an
"infrared" anomaly that breaks the de Sitter symmetry for all vacua save the
Euclidian one. The divergence of a symmetry current at point $x$ has a non-zero
contribution at the antipodal point ${\bar x}$.
|
[
{
"created": "Tue, 2 Nov 2010 18:43:01 GMT",
"version": "v1"
}
] |
2010-11-03
|
[
[
"Bander",
"Myron",
""
]
] |
To one loop order, interacting boson fields on de Sitter space have an "infrared" anomaly that breaks the de Sitter symmetry for all vacua save the Euclidian one. The divergence of a symmetry current at point $x$ has a non-zero contribution at the antipodal point ${\bar x}$.
|
1811.07027
|
Xiaojun Yao
|
Xiaojun Yao and Thomas Mehen
|
Quarkonium In-Medium Transport Equation Derived from First Principles
|
29 pages, 1 figure, minor changes, version accepted by PRD
|
Phys. Rev. D 99, 096028 (2019)
|
10.1103/PhysRevD.99.096028
| null |
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We use the open quantum system formalism to study the dynamical in-medium
evolution of quarkonium. The system of quarkonium is described by potential
non-relativistic QCD while the environment is a weakly coupled quark-gluon
plasma in local thermal equilibrium below the melting temperature of the
quarkonium. Under the Markovian approximation, it is shown that the Lindblad
equation leads to a Boltzmann transport equation if a Wigner transform is
applied to the system density matrix. Our derivation illuminates how the
microscopic time-reversibility of QCD is consistent with the time-irreversible
in-medium evolution of quarkonium states. Static screening, dissociation and
recombination of quarkonium are treated in the same theoretical framework. In
addition, quarkonium annihilation is included in a similar way, although the
effect is negligible for the phenomenology of the current heavy ion collision
experiments. The methods used here can be extended to study quarkonium
dynamical evolution inside a strongly coupled QGP, a hot medium out of
equilibrium or cold nuclear matter, which is important to studying quarkonium
production in heavy ion, proton-ion, and electron-ion collisions.
|
[
{
"created": "Fri, 16 Nov 2018 20:34:52 GMT",
"version": "v1"
},
{
"created": "Thu, 4 Apr 2019 19:25:52 GMT",
"version": "v2"
},
{
"created": "Mon, 27 May 2019 20:54:44 GMT",
"version": "v3"
}
] |
2019-06-04
|
[
[
"Yao",
"Xiaojun",
""
],
[
"Mehen",
"Thomas",
""
]
] |
We use the open quantum system formalism to study the dynamical in-medium evolution of quarkonium. The system of quarkonium is described by potential non-relativistic QCD while the environment is a weakly coupled quark-gluon plasma in local thermal equilibrium below the melting temperature of the quarkonium. Under the Markovian approximation, it is shown that the Lindblad equation leads to a Boltzmann transport equation if a Wigner transform is applied to the system density matrix. Our derivation illuminates how the microscopic time-reversibility of QCD is consistent with the time-irreversible in-medium evolution of quarkonium states. Static screening, dissociation and recombination of quarkonium are treated in the same theoretical framework. In addition, quarkonium annihilation is included in a similar way, although the effect is negligible for the phenomenology of the current heavy ion collision experiments. The methods used here can be extended to study quarkonium dynamical evolution inside a strongly coupled QGP, a hot medium out of equilibrium or cold nuclear matter, which is important to studying quarkonium production in heavy ion, proton-ion, and electron-ion collisions.
|
1809.10975
|
Aninda Sinha
|
Rajesh Gopakumar and Aninda Sinha
|
On the Polyakov-Mellin bootstrap
|
37 pages, v2: version to appear in JHEP
| null |
10.1007/JHEP12(2018)040
| null |
hep-th cond-mat.stat-mech hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We elaborate on some general aspects of the crossing symmetric approach of
Polyakov to the conformal bootstrap, as recently formulated in Mellin space.
This approach uses, as building blocks, Witten diagrams in AdS. We show the
necessity for having contact Witten diagrams, in addition to the exchange ones,
in two different contexts: a) the large $c$ expansion of the holographic
bootstrap b) in the $\epsilon$ expansion at subleading orders to the ones
studied already. In doing so, we use alternate simplified representations of
the Witten diagrams in Mellin space. This enables us to also obtain compact,
explicit expressions (in terms of a ${}_7F_6$ hypergeometric function!) for the
analogue of the crossing kernel for Witten diagrams i.e., the decomposition
into $s$-channel partial waves of crossed channel exchange diagrams.
|
[
{
"created": "Fri, 28 Sep 2018 12:00:50 GMT",
"version": "v1"
},
{
"created": "Fri, 7 Dec 2018 08:23:32 GMT",
"version": "v2"
}
] |
2018-12-26
|
[
[
"Gopakumar",
"Rajesh",
""
],
[
"Sinha",
"Aninda",
""
]
] |
We elaborate on some general aspects of the crossing symmetric approach of Polyakov to the conformal bootstrap, as recently formulated in Mellin space. This approach uses, as building blocks, Witten diagrams in AdS. We show the necessity for having contact Witten diagrams, in addition to the exchange ones, in two different contexts: a) the large $c$ expansion of the holographic bootstrap b) in the $\epsilon$ expansion at subleading orders to the ones studied already. In doing so, we use alternate simplified representations of the Witten diagrams in Mellin space. This enables us to also obtain compact, explicit expressions (in terms of a ${}_7F_6$ hypergeometric function!) for the analogue of the crossing kernel for Witten diagrams i.e., the decomposition into $s$-channel partial waves of crossed channel exchange diagrams.
|
0805.0388
|
Charles B. Thorn
|
Charles M. Sommerfield and Charles B. Thorn
|
Classical Worldsheets for String Scattering on Flat and AdS Spacetime
|
26 pages, 19 figures, corrected typos, added reference
|
Phys.Rev.D78:046005,2008
|
10.1103/PhysRevD.78.046005
|
UFIFT-HEP-08-6
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a study of the worldsheets that describe the classical limit of
various string scattering processes. Our main focus is on string scattering in
AdS spacetime because of its relation via the AdS/CFT correspondence to gluon
scattering in {\cal N}=4 supersymmetric Yang-Mills theory. But we also consider
analogous processes in flat Minkowski spacetime which we compare to the AdS
case. In addition to scattering of string by string we also find and study
worldsheets describing the scattering of a string by external sources.
|
[
{
"created": "Sun, 4 May 2008 02:44:53 GMT",
"version": "v1"
},
{
"created": "Wed, 21 May 2008 19:15:55 GMT",
"version": "v2"
}
] |
2008-11-26
|
[
[
"Sommerfield",
"Charles M.",
""
],
[
"Thorn",
"Charles B.",
""
]
] |
We present a study of the worldsheets that describe the classical limit of various string scattering processes. Our main focus is on string scattering in AdS spacetime because of its relation via the AdS/CFT correspondence to gluon scattering in {\cal N}=4 supersymmetric Yang-Mills theory. But we also consider analogous processes in flat Minkowski spacetime which we compare to the AdS case. In addition to scattering of string by string we also find and study worldsheets describing the scattering of a string by external sources.
|
hep-th/0509128
|
Julien Grain
|
J. Grain, A. Barrau, P. Kanti
|
Exact Results for Evaporating Black Holes in Curvature-Squared Lovelock
Gravity: Gauss-Bonnet Greybody Factors
|
29 pages, Latex file, 11 figures, Data files (greybody factors)
available at http://lpsc.in2p3.fr/ams/greybody/, typos corrected, references
added, version to appear in Phys. Rev. D
|
Phys.Rev.D72:104016,2005
|
10.1103/PhysRevD.72.104016
|
DCPT-05/41
|
hep-th astro-ph gr-qc hep-ph
| null |
Lovelock gravity is an important extension of General Relativity that
provides a promising framework to study curvature corrections to the Einstein
action, while avoiding ghosts and keeping second order field equations. This
paper derives the greybody factors for D-dimensional black holes arising in a
theory with a Gauss-Bonnet curvature-squared term. These factors describe the
non-trivial coupling between black holes and quantum fields during the
evaporation process: they can be used both from a theoretical viewpoint to
investigate the intricate spacetime structure around such a black hole, and for
phenomenological purposes in the framework of braneworld models with a low
Planck scale. We derive exact spectra for the emission of scalar, fermion and
gauge fields emitted on the brane, and for scalar fields emitted in the bulk,
and demonstrate how the Gauss-Bonnet term can change the bulk-to-brane emission
rates ratio in favour of the bulk channel in particular frequency regimes.
|
[
{
"created": "Fri, 16 Sep 2005 10:24:42 GMT",
"version": "v1"
},
{
"created": "Wed, 9 Nov 2005 10:27:09 GMT",
"version": "v2"
}
] |
2008-11-26
|
[
[
"Grain",
"J.",
""
],
[
"Barrau",
"A.",
""
],
[
"Kanti",
"P.",
""
]
] |
Lovelock gravity is an important extension of General Relativity that provides a promising framework to study curvature corrections to the Einstein action, while avoiding ghosts and keeping second order field equations. This paper derives the greybody factors for D-dimensional black holes arising in a theory with a Gauss-Bonnet curvature-squared term. These factors describe the non-trivial coupling between black holes and quantum fields during the evaporation process: they can be used both from a theoretical viewpoint to investigate the intricate spacetime structure around such a black hole, and for phenomenological purposes in the framework of braneworld models with a low Planck scale. We derive exact spectra for the emission of scalar, fermion and gauge fields emitted on the brane, and for scalar fields emitted in the bulk, and demonstrate how the Gauss-Bonnet term can change the bulk-to-brane emission rates ratio in favour of the bulk channel in particular frequency regimes.
|
1111.1000
|
Jan-Eric Daum
|
Jan-Eric Daum and Martin Reuter
|
Running Immirzi Parameter and Asymptotic Safety
|
To appear in the proceedings of CORFU 2010
| null | null | null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the renormalization group (RG) properties of quantum gravity,
using the vielbein and the spin connection as the fundamental field variables.
We require the effective action to be invariant under the semidirect product of
spacetime diffeomorphisms and local frame rotations. Starting from the
corresponding functional integral we review the construction of an appropriate
theory space and an exact funtional RG equation operating on it. We then solve
this equation on a truncated space defined by a three parameter family of
Holst-type actions which involve a running Immirzi parameter. We find evidence
for the existence of an asymptotically safe fundamental theory. It is probably
inequivalent to metric quantum gravity constructed in the same way.
|
[
{
"created": "Thu, 3 Nov 2011 21:40:03 GMT",
"version": "v1"
}
] |
2011-11-07
|
[
[
"Daum",
"Jan-Eric",
""
],
[
"Reuter",
"Martin",
""
]
] |
We explore the renormalization group (RG) properties of quantum gravity, using the vielbein and the spin connection as the fundamental field variables. We require the effective action to be invariant under the semidirect product of spacetime diffeomorphisms and local frame rotations. Starting from the corresponding functional integral we review the construction of an appropriate theory space and an exact funtional RG equation operating on it. We then solve this equation on a truncated space defined by a three parameter family of Holst-type actions which involve a running Immirzi parameter. We find evidence for the existence of an asymptotically safe fundamental theory. It is probably inequivalent to metric quantum gravity constructed in the same way.
|
hep-th/0105010
|
Friedemann Brandt
|
Friedemann Brandt
|
Gauge theories of spacetime symmetries
|
8 pages, revtex; v2: minor improvements of text and formulas; v3:
typo in formula after eq. (35) corrected
|
Phys.Rev.D64:065025,2001
|
10.1103/PhysRevD.64.065025
|
MPI-MIS-23/2001, AEI-2001-039
|
hep-th gr-qc
| null |
Gauge theories of conformal spacetime symmetries are presented which merge
features of Yang-Mills theory and general relativity in a new way. The models
are local but nonpolynomial in the gauge fields, with a nonpolynomial structure
that can be elegantly written in terms of a metric (or vielbein) composed of
the gauge fields. General relativity itself emerges from the construction as a
gauge theory of spacetime translations. The role of the models within a general
classification of consistent interactions of gauge fields is discussed as well.
|
[
{
"created": "Wed, 2 May 2001 12:58:19 GMT",
"version": "v1"
},
{
"created": "Thu, 10 May 2001 14:53:12 GMT",
"version": "v2"
},
{
"created": "Thu, 13 Sep 2001 16:10:38 GMT",
"version": "v3"
}
] |
2014-11-18
|
[
[
"Brandt",
"Friedemann",
""
]
] |
Gauge theories of conformal spacetime symmetries are presented which merge features of Yang-Mills theory and general relativity in a new way. The models are local but nonpolynomial in the gauge fields, with a nonpolynomial structure that can be elegantly written in terms of a metric (or vielbein) composed of the gauge fields. General relativity itself emerges from the construction as a gauge theory of spacetime translations. The role of the models within a general classification of consistent interactions of gauge fields is discussed as well.
|
1709.05141
|
Reiko Toriumi
|
Joseph Ben Geloun, Reiko Toriumi
|
Renormalizable Enhanced Tensor Field Theory: The quartic melonic case
|
52 pages, 12 figures
| null |
10.1063/1.5022438
| null |
hep-th gr-qc math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Amplitudes of ordinary tensor models are dominated at large $N$ by the
so-called melonic graph amplitudes. Enhanced tensor models extend tensor models
with special scalings of their interactions which allow, in the same limit,
that the sub-dominant amplitudes to be "enhanced", that is to be as dominant as
the melonic ones. These models were introduced to explore new large $N$ limits
and to probe different phases for tensor models. Tensor field theory is the
quantum field theoretic counterpart of tensor models and enhanced tensor field
theory enlarges this theory space to accommodate enhanced tensor interactions.
We undertake the multi-scale renormalization analysis for two types of enhanced
quartic melonic theories with rank $d$ tensor fields $\phi: (U(1)^{D})^{d} \to
\mathbb{C}$ and with interactions of the form $p^{2a}\phi^4$ reminiscent of
derivative couplings expressed in momentum space. Scrutinizing the degree of
divergence of both theories, we identify generic conditions for their
renormalizability at all orders of perturbation. For a first type of theory, we
identify a 2-parameter space of just-renormalizable models for generic $(d,D)$.
These models have dominant non-melonic four-point functions. Finally, by
specifying the parameters, we detail the renormalization analysis of a second
type of model. Lying in between just- and super-renormalizability, that model
is more exotic: all four-point amplitudes are convergent, however it exhibits
an infinite family of divergent two-point amplitudes.
|
[
{
"created": "Fri, 15 Sep 2017 10:14:53 GMT",
"version": "v1"
}
] |
2018-12-26
|
[
[
"Geloun",
"Joseph Ben",
""
],
[
"Toriumi",
"Reiko",
""
]
] |
Amplitudes of ordinary tensor models are dominated at large $N$ by the so-called melonic graph amplitudes. Enhanced tensor models extend tensor models with special scalings of their interactions which allow, in the same limit, that the sub-dominant amplitudes to be "enhanced", that is to be as dominant as the melonic ones. These models were introduced to explore new large $N$ limits and to probe different phases for tensor models. Tensor field theory is the quantum field theoretic counterpart of tensor models and enhanced tensor field theory enlarges this theory space to accommodate enhanced tensor interactions. We undertake the multi-scale renormalization analysis for two types of enhanced quartic melonic theories with rank $d$ tensor fields $\phi: (U(1)^{D})^{d} \to \mathbb{C}$ and with interactions of the form $p^{2a}\phi^4$ reminiscent of derivative couplings expressed in momentum space. Scrutinizing the degree of divergence of both theories, we identify generic conditions for their renormalizability at all orders of perturbation. For a first type of theory, we identify a 2-parameter space of just-renormalizable models for generic $(d,D)$. These models have dominant non-melonic four-point functions. Finally, by specifying the parameters, we detail the renormalization analysis of a second type of model. Lying in between just- and super-renormalizability, that model is more exotic: all four-point amplitudes are convergent, however it exhibits an infinite family of divergent two-point amplitudes.
|
1806.09200
|
Rob Klabbers
|
Gleb Arutyunov, Rob Klabbers, Sergei Savin
|
Four-point functions of all-different-weight chiral primary operators in
the supergravity approximation
|
20+23 pages, 3 figures; v2: published version
| null |
10.1007/JHEP09(2018)023
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recently a Mellin-space formula was conjectured for the form of correlation
functions of $1/2$ BPS operators in planar $\mathcal{N}=4$ SYM in the strong 't
Hooft coupling limit. In this work we report on the computation of two
previously unknown four-point functions of operators with weights $\langle 2345
\rangle$ and $\langle 3456\rangle$, from the effective type-IIB supergravity
action using AdS/CFT. These correlators are novel: they are the first
correlators with all-different weights and in particular $\langle 3456\rangle$
is the first next-next-next-to-extremal correlator to ever have been computed.
We also present simplifications of the known algorithm, without which these
computations could not have been executed without considerable computer power.
The main simplifications we found are present in the computation of the
exchange Lagrangian and in the computation of $a$ tensors. After bringing our
results in the appropriate form we successfully corroborate the recently
conjectured formula.
|
[
{
"created": "Sun, 24 Jun 2018 19:51:13 GMT",
"version": "v1"
},
{
"created": "Fri, 14 Sep 2018 07:53:10 GMT",
"version": "v2"
}
] |
2018-09-17
|
[
[
"Arutyunov",
"Gleb",
""
],
[
"Klabbers",
"Rob",
""
],
[
"Savin",
"Sergei",
""
]
] |
Recently a Mellin-space formula was conjectured for the form of correlation functions of $1/2$ BPS operators in planar $\mathcal{N}=4$ SYM in the strong 't Hooft coupling limit. In this work we report on the computation of two previously unknown four-point functions of operators with weights $\langle 2345 \rangle$ and $\langle 3456\rangle$, from the effective type-IIB supergravity action using AdS/CFT. These correlators are novel: they are the first correlators with all-different weights and in particular $\langle 3456\rangle$ is the first next-next-next-to-extremal correlator to ever have been computed. We also present simplifications of the known algorithm, without which these computations could not have been executed without considerable computer power. The main simplifications we found are present in the computation of the exchange Lagrangian and in the computation of $a$ tensors. After bringing our results in the appropriate form we successfully corroborate the recently conjectured formula.
|
0906.0604
|
Gregory Moreau
|
Abdelhak Djouadi, Gregory Moreau, Francois Richard and Ritesh K. Singh
|
The forward-backward asymmetry of top quark production at the Tevatron
in warped extra dimensional models
|
4 pages, 1 figure, published version
|
Phys.Rev.D82:071702,2010
|
10.1103/PhysRevD.82.071702
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The CDF and D0 experiments have reported on the measurement of the
forward-backward asymmetry of top quark pair production at the Tevatron and the
result is that it is more than 2 standard deviations above the predicted value
in the Standard Model. This has to be added to the longstanding anomaly in the
forward-backward asymmetry for bottom quark production at LEP which is 3
standard deviations different from the Standard Model value. The discrepancy in
the bottom asymmetry can be accounted for by the contributions of Kaluza-Klein
excitations of electroweak gauge bosons at LEP in warped extra dimensional
models in which the fermions are localized differently along the extra
dimension so that the gauge interactions of heavy third generation fermions are
naturally different from that of light fermions. In this paper, we show that it
is more difficult to elaborate a model generating a significant top asymmetry
in a similar way -- through exchanges of Kaluza-Klein gluons at the Tevatron --
due to the indirect constraints originating from precision electroweak data.
|
[
{
"created": "Tue, 2 Jun 2009 21:20:06 GMT",
"version": "v1"
},
{
"created": "Sat, 21 May 2011 21:01:12 GMT",
"version": "v2"
}
] |
2011-05-24
|
[
[
"Djouadi",
"Abdelhak",
""
],
[
"Moreau",
"Gregory",
""
],
[
"Richard",
"Francois",
""
],
[
"Singh",
"Ritesh K.",
""
]
] |
The CDF and D0 experiments have reported on the measurement of the forward-backward asymmetry of top quark pair production at the Tevatron and the result is that it is more than 2 standard deviations above the predicted value in the Standard Model. This has to be added to the longstanding anomaly in the forward-backward asymmetry for bottom quark production at LEP which is 3 standard deviations different from the Standard Model value. The discrepancy in the bottom asymmetry can be accounted for by the contributions of Kaluza-Klein excitations of electroweak gauge bosons at LEP in warped extra dimensional models in which the fermions are localized differently along the extra dimension so that the gauge interactions of heavy third generation fermions are naturally different from that of light fermions. In this paper, we show that it is more difficult to elaborate a model generating a significant top asymmetry in a similar way -- through exchanges of Kaluza-Klein gluons at the Tevatron -- due to the indirect constraints originating from precision electroweak data.
|
0804.1248
|
Eran Palti
|
Eran Palti, Gianmassimo Tasinato, John Ward
|
WEAKLY-coupled IIA Flux Compactifications
|
33 pages, 8 figures
|
JHEP 0806:084,2008
|
10.1088/1126-6708/2008/06/084
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study compactifications of type IIA string theory on Calabi-Yau manifolds
that are mirror to a subset of the type IIB LARGE-volume models. A combination
of flux, alpha' corrections and non-perturbative effects stabilises the moduli
in a non-supersymmetric AdS vacuum. This vacuum has the feature that the
(ten-dimensional) string coupling is exponentially small which can naturally
lead to a TeV supersymmetry breaking scale with an intermediate string scale.
The AdS vacuum can be uplifted to a dS one through the introduction of D6
branes, and complex-structure modular inflation can be realised.
|
[
{
"created": "Tue, 8 Apr 2008 11:48:54 GMT",
"version": "v1"
}
] |
2009-12-04
|
[
[
"Palti",
"Eran",
""
],
[
"Tasinato",
"Gianmassimo",
""
],
[
"Ward",
"John",
""
]
] |
We study compactifications of type IIA string theory on Calabi-Yau manifolds that are mirror to a subset of the type IIB LARGE-volume models. A combination of flux, alpha' corrections and non-perturbative effects stabilises the moduli in a non-supersymmetric AdS vacuum. This vacuum has the feature that the (ten-dimensional) string coupling is exponentially small which can naturally lead to a TeV supersymmetry breaking scale with an intermediate string scale. The AdS vacuum can be uplifted to a dS one through the introduction of D6 branes, and complex-structure modular inflation can be realised.
|
1410.6284
|
Bai-Song Xie
|
Z. L. Li, D. Lu, B. F. Shen, L. B. Fu, J. Liu, and B. S. Xie
|
Mass shift effects in nonperturbative multiphoton pair production for
arbitrary polarized electric fields
|
14 pages, 6 figures
| null | null | null |
hep-ph quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The mass shift effects in multiphoton pair production of a nonperturbative
nature for arbitrary polarized electric fields are investigated numerically by
employing the real-time Dirac-Heisenberg-Wigner formalism, and theoretically by
proposing an effective energy concept. It is found that the theoretical results
are agreement with the numerical ones very well. It is the first time to
consider the roles of the momenta of created particles and the polarizations of
external fields played in the mass shift effects. These results can deepen the
understanding of pair production in the nonperturbative threshold regime.
Moreover, the distinct mass shift effects are observable in the forthcoming
experiments and can be used as a probe to distinguish the electron-positron
pair production from other background events.
|
[
{
"created": "Thu, 23 Oct 2014 08:15:59 GMT",
"version": "v1"
}
] |
2014-10-24
|
[
[
"Li",
"Z. L.",
""
],
[
"Lu",
"D.",
""
],
[
"Shen",
"B. F.",
""
],
[
"Fu",
"L. B.",
""
],
[
"Liu",
"J.",
""
],
[
"Xie",
"B. S.",
""
]
] |
The mass shift effects in multiphoton pair production of a nonperturbative nature for arbitrary polarized electric fields are investigated numerically by employing the real-time Dirac-Heisenberg-Wigner formalism, and theoretically by proposing an effective energy concept. It is found that the theoretical results are agreement with the numerical ones very well. It is the first time to consider the roles of the momenta of created particles and the polarizations of external fields played in the mass shift effects. These results can deepen the understanding of pair production in the nonperturbative threshold regime. Moreover, the distinct mass shift effects are observable in the forthcoming experiments and can be used as a probe to distinguish the electron-positron pair production from other background events.
|
2006.02422
|
Tom\'a\v{s} Proch\'azka
|
Lorenz Eberhardt, Tom\'a\v{s} Proch\'azka
|
The Grassmannian VOA
|
ancillary Mathematica notebook for character calculations included
| null |
10.1007/JHEP09(2020)150
| null |
hep-th math-ph math.MP math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the 3-parametric family of vertex operator algebras based on the
unitary Grassmannian coset CFT $\mathfrak{u}(M+N)_k/(\mathfrak{u}(M)_k \times
\mathfrak{u}(N)_k)$. This VOA serves as a basic building block for a large
class of cosets and generalizes the $\mathcal{W}_\infty$ algebra. We analyze
representations and their characters in detail and find surprisingly simple
character formulas for the representations in the generic parameter regime that
admit an elegant combinatorial formulation. We also discuss truncations of the
algebra and give a conjectural formula for the complete set of truncation
curves. We develop a theory of gluing for these algebras in order to build more
complicated coset and non-coset algebras. We demonstrate the power of this
technology with some examples and show in particular that the $\mathcal{N}=2$
supersymmetric Grassmannian can be obtained by gluing three bosonic
Grassmannian algebras in a loop. We finally speculate about the tantalizing
possibility that this algebra is a specialization of an even larger
4-parametric family of algebras exhibiting pentality symmetry. Specialization
of this conjectural family should include both the unitary Grassmannian family
as well as the Lagrangian Grassmannian family of VOAs which interpolates
between the unitary and the orthosymplectic cosets.
|
[
{
"created": "Wed, 3 Jun 2020 17:52:27 GMT",
"version": "v1"
}
] |
2020-10-28
|
[
[
"Eberhardt",
"Lorenz",
""
],
[
"Procházka",
"Tomáš",
""
]
] |
We study the 3-parametric family of vertex operator algebras based on the unitary Grassmannian coset CFT $\mathfrak{u}(M+N)_k/(\mathfrak{u}(M)_k \times \mathfrak{u}(N)_k)$. This VOA serves as a basic building block for a large class of cosets and generalizes the $\mathcal{W}_\infty$ algebra. We analyze representations and their characters in detail and find surprisingly simple character formulas for the representations in the generic parameter regime that admit an elegant combinatorial formulation. We also discuss truncations of the algebra and give a conjectural formula for the complete set of truncation curves. We develop a theory of gluing for these algebras in order to build more complicated coset and non-coset algebras. We demonstrate the power of this technology with some examples and show in particular that the $\mathcal{N}=2$ supersymmetric Grassmannian can be obtained by gluing three bosonic Grassmannian algebras in a loop. We finally speculate about the tantalizing possibility that this algebra is a specialization of an even larger 4-parametric family of algebras exhibiting pentality symmetry. Specialization of this conjectural family should include both the unitary Grassmannian family as well as the Lagrangian Grassmannian family of VOAs which interpolates between the unitary and the orthosymplectic cosets.
|
0805.3716
|
Samir Mathur
|
Samir D. Mathur
|
Tunneling into fuzzball states
|
7 pages, 2 figures, Latex
|
Gen.Rel.Grav.42:113-118,2010
|
10.1007/s10714-009-0837-3
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
String theory suggests that black hole microstates are quantum, horizon sized
`fuzzballs', rather than smooth geometries with horizon. Radiation from
fuzzballs can carry information and does not lead to information loss. But if
we let a shell of matter collapse then it creates a horizon, and it seems that
subsequent radiation will lead to information loss. We argue that the
resolution to this problem is that the shell can tunnel to the fuzzball
configurations. The amplitude for tunneling is small because we are relating
two macroscopically different configurations, but the number of states that we
can tunnel to, given through the Bekenstein entropy, is very large. These small
and large numbers can cancel each other, making it possible for the shell to
tunnel into fuzzball states before a significant amount of radiation has been
emitted. This offers a way to resolve the information paradox.
|
[
{
"created": "Fri, 23 May 2008 20:46:57 GMT",
"version": "v1"
}
] |
2014-11-18
|
[
[
"Mathur",
"Samir D.",
""
]
] |
String theory suggests that black hole microstates are quantum, horizon sized `fuzzballs', rather than smooth geometries with horizon. Radiation from fuzzballs can carry information and does not lead to information loss. But if we let a shell of matter collapse then it creates a horizon, and it seems that subsequent radiation will lead to information loss. We argue that the resolution to this problem is that the shell can tunnel to the fuzzball configurations. The amplitude for tunneling is small because we are relating two macroscopically different configurations, but the number of states that we can tunnel to, given through the Bekenstein entropy, is very large. These small and large numbers can cancel each other, making it possible for the shell to tunnel into fuzzball states before a significant amount of radiation has been emitted. This offers a way to resolve the information paradox.
|
hep-ph/9709352
|
Kirill Melnikov
|
Dmitri Ivanov and Kirill Melnikov
|
Lepton pair production by a high energy photon in a strong
electromagnetic field
|
20 pages, Latex, 2 Figures
|
Phys.Rev. D57 (1998) 4025-4034
|
10.1103/PhysRevD.57.4025
|
TTP96-35, NTZ-24/97
|
hep-ph
| null |
Using impact-factor representation, we consider the lepton pair production by
an incident high-energy photon in a strong electromagnetic field of a nucleus.
By summing leading terms of perturbation series, we obtain a simple formula for
the amplitude, valid to all orders in ${\cal O}(\alpha Z)$ and arbitrary field
of the nucleus. Using these results, we derive, in a simple manner, the results
for the lepton pair production by a virtual incident photon in a Coulomb field.
For real incident photon our results coincide with the known ones. Also, a
particular example of a non-Coulomb potential is discussed in some detail.
|
[
{
"created": "Mon, 15 Sep 1997 18:13:22 GMT",
"version": "v1"
}
] |
2009-10-30
|
[
[
"Ivanov",
"Dmitri",
""
],
[
"Melnikov",
"Kirill",
""
]
] |
Using impact-factor representation, we consider the lepton pair production by an incident high-energy photon in a strong electromagnetic field of a nucleus. By summing leading terms of perturbation series, we obtain a simple formula for the amplitude, valid to all orders in ${\cal O}(\alpha Z)$ and arbitrary field of the nucleus. Using these results, we derive, in a simple manner, the results for the lepton pair production by a virtual incident photon in a Coulomb field. For real incident photon our results coincide with the known ones. Also, a particular example of a non-Coulomb potential is discussed in some detail.
|
hep-th/0510166
|
Michael B. Green
|
Michael B. Green, Stefano Kovacs, Aninda Sinha
|
Non-Perturbative Contributions in the Plane-Wave/BMN Limit
|
Einstein Symposium, Bibliotecha Alexandrina, June 4--6 2005. 13 pages
| null | null |
DAMTP-2005-100; AEI-2005-158
|
hep-th
| null |
This talk surveys recent work on the contribution of instantons to the
anomalous dimensions of BMN operators in $\calN=4$ supersymmetric Yang--Mills
theory and the corresponding non-perturbative contributions to the mass-matrix
of excited string states in maximally supersymmetric plane-wave string theory.
The dependence on the coupling constants and the impurity mode numbers in the
gauge theory and string theory are in striking agreement.
[Presented by MBG at the Einstein Symposium, Bibliotecha Alexandrina, June
4--6 2005.]
|
[
{
"created": "Wed, 19 Oct 2005 19:44:24 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Green",
"Michael B.",
""
],
[
"Kovacs",
"Stefano",
""
],
[
"Sinha",
"Aninda",
""
]
] |
This talk surveys recent work on the contribution of instantons to the anomalous dimensions of BMN operators in $\calN=4$ supersymmetric Yang--Mills theory and the corresponding non-perturbative contributions to the mass-matrix of excited string states in maximally supersymmetric plane-wave string theory. The dependence on the coupling constants and the impurity mode numbers in the gauge theory and string theory are in striking agreement. [Presented by MBG at the Einstein Symposium, Bibliotecha Alexandrina, June 4--6 2005.]
|
1209.1202
|
Danning Li
|
Danning Li, Mei Huang, and Qi-Shu Yan
|
Accommodate chiral symmetry breaking and linear confinement in a
dynamical holographic QCD model
|
Proccedings of QCD@Work,International Workshop on QCD, theoretical
and experimental,Lecce(Italy), June 18-21,2012, 7 pages
| null |
10.1063/1.4763523
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct a self-consistent holographic QCD model which can realize two
most important phenomena of QCD, i.e. chiral symmetry breaking and confinement.
The model is formulated in the framework of graviton-dilaton-scalar system,
where the dilaton field is of dimension-2 which might be dual to the
dimension-2 gluon condensate and can lead to the linear confinement, while the
scalar field corresponds to the quark anti-quark condensate and can explain the
property of chiral dynamics. Within this framework, both Regge spectra of
hadrons and the linear potential between quarks can be accommodated. It is also
found that the negative dilaton background can be safely excluded in this
framework.
|
[
{
"created": "Thu, 6 Sep 2012 07:29:33 GMT",
"version": "v1"
}
] |
2015-06-11
|
[
[
"Li",
"Danning",
""
],
[
"Huang",
"Mei",
""
],
[
"Yan",
"Qi-Shu",
""
]
] |
We construct a self-consistent holographic QCD model which can realize two most important phenomena of QCD, i.e. chiral symmetry breaking and confinement. The model is formulated in the framework of graviton-dilaton-scalar system, where the dilaton field is of dimension-2 which might be dual to the dimension-2 gluon condensate and can lead to the linear confinement, while the scalar field corresponds to the quark anti-quark condensate and can explain the property of chiral dynamics. Within this framework, both Regge spectra of hadrons and the linear potential between quarks can be accommodated. It is also found that the negative dilaton background can be safely excluded in this framework.
|
1703.04030
|
Bilgehan Baris Oner
|
Yigit Can Acar, Umit Kaya, Bilgehan Baris Oner
|
Resonant Production of Color Octet Muons at the Future Circular Collider
Based Muon-Proton Colliders
|
12 pages, 10 figures, 4 tables. To be published in Chinese Physics C
| null |
10.1088/1674-1137/42/8/083108
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the resonant production of color octet muons in order to
explore the discovery potential of the FCC-based \mu p colliders. It is shown
that search potential of \mu p colliders essentially surpass potential of the
LHC and would exceed that of FCC pp collider.
|
[
{
"created": "Sat, 11 Mar 2017 20:33:58 GMT",
"version": "v1"
},
{
"created": "Fri, 17 Mar 2017 18:42:35 GMT",
"version": "v2"
},
{
"created": "Mon, 4 Jun 2018 08:04:13 GMT",
"version": "v3"
}
] |
2018-08-15
|
[
[
"Acar",
"Yigit Can",
""
],
[
"Kaya",
"Umit",
""
],
[
"Oner",
"Bilgehan Baris",
""
]
] |
We investigate the resonant production of color octet muons in order to explore the discovery potential of the FCC-based \mu p colliders. It is shown that search potential of \mu p colliders essentially surpass potential of the LHC and would exceed that of FCC pp collider.
|
hep-th/0408101
|
Andrew Mennim
|
Richard A. Battye, Andrew Mennim
|
Multiple-scales analysis of cosmological perturbations in brane-worlds
|
13 pages, Revtex
|
Phys.Rev.D70:124008,2004
|
10.1103/PhysRevD.70.124008
|
DAMTP-2004-81
|
hep-th
| null |
We present a new approximation method for solving the equations of motion for
cosmological tensor perturbations in a Randall-Sundrum brane-world model of the
type with one brane in a five-dimensional anti-de Sitter spacetime. This method
avoids the problem of coordinate singularities inherent in some methods. At
leading order, the zero-mode solution replicates the evolution of perturbations
in a four-dimensional Friedmann-Robertson-Walker universe in the absence of any
tensor component to the matter perturbation on the brane. At next order, there
is a mode-mixing effect, although, importantly, the zero-mode does not source
any other modes.
|
[
{
"created": "Thu, 12 Aug 2004 15:04:20 GMT",
"version": "v1"
}
] |
2010-05-12
|
[
[
"Battye",
"Richard A.",
""
],
[
"Mennim",
"Andrew",
""
]
] |
We present a new approximation method for solving the equations of motion for cosmological tensor perturbations in a Randall-Sundrum brane-world model of the type with one brane in a five-dimensional anti-de Sitter spacetime. This method avoids the problem of coordinate singularities inherent in some methods. At leading order, the zero-mode solution replicates the evolution of perturbations in a four-dimensional Friedmann-Robertson-Walker universe in the absence of any tensor component to the matter perturbation on the brane. At next order, there is a mode-mixing effect, although, importantly, the zero-mode does not source any other modes.
|
0809.3453
|
Eduardo Pont\'on
|
Puneet Batra and Eduardo Ponton
|
The Supersymmetric Higgs
|
34 pages, 5 figures
|
Phys.Rev.D79:035001,2009
|
10.1103/PhysRevD.79.035001
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the Minimal Supersymmetric Standard Model (the MSSM), the electroweak
symmetry is restored as supersymmetry-breaking terms are turned off. We
describe a generic extension of the MSSM where the electroweak symmetry is
broken in the supersymmetric limit. We call this limit the "sEWSB" phase, short
for supersymmetric electroweak symmetry breaking. We define this phase in an
effective field theory that only contains the MSSM degrees of freedom. The
sEWSB vacua naturally have an inverted scalar spectrum, where the heaviest
CP-even Higgs state has Standard Model-like couplings to the massive vector
bosons; experimental constraints in the scalar Higgs sector are more easily
satisfied than in the MSSM.
|
[
{
"created": "Mon, 22 Sep 2008 11:07:54 GMT",
"version": "v1"
}
] |
2009-02-20
|
[
[
"Batra",
"Puneet",
""
],
[
"Ponton",
"Eduardo",
""
]
] |
In the Minimal Supersymmetric Standard Model (the MSSM), the electroweak symmetry is restored as supersymmetry-breaking terms are turned off. We describe a generic extension of the MSSM where the electroweak symmetry is broken in the supersymmetric limit. We call this limit the "sEWSB" phase, short for supersymmetric electroweak symmetry breaking. We define this phase in an effective field theory that only contains the MSSM degrees of freedom. The sEWSB vacua naturally have an inverted scalar spectrum, where the heaviest CP-even Higgs state has Standard Model-like couplings to the massive vector bosons; experimental constraints in the scalar Higgs sector are more easily satisfied than in the MSSM.
|
1304.0382
|
Igor Bandos A.
|
Igor A. Bandos and Carlos Meliveo
|
Covariant action and equations of motion for the eleven dimensional
multiple M0-brane system
|
23 pages, RevTeX4, no figures. V2: 24 pages, cosmetic changes,
misprints corrected, reference and some comments added, to appear in PRD
| null |
10.1103/PhysRevD.87.126011
| null |
hep-th gr-qc hep-ph math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the properties of the covariant supersymmetric and kappa-symmetric
action for a system of N nearly coincident M0-branes (mM0 system) in flat
eleven dimensional (11D) superspace and obtain supersymmetric equations for
this dynamical system. Although a single M0-brane is the massless 11D
superparticle, center of energy motion of the mM0 system is characterized by a
nonnegative constant mass M constructed from the matrix fields describing the
relative motion of mM0 constituents. We show that a bosonic solution of the mM0
equations can be supersymmetric iff this effective mass vanishes, M=0, and that
all the supersymmetric bosonic solutions preserve just one half of the 11D
supersymmetry.
|
[
{
"created": "Mon, 1 Apr 2013 15:59:47 GMT",
"version": "v1"
},
{
"created": "Fri, 21 Jun 2013 16:21:30 GMT",
"version": "v2"
}
] |
2013-08-09
|
[
[
"Bandos",
"Igor A.",
""
],
[
"Meliveo",
"Carlos",
""
]
] |
We study the properties of the covariant supersymmetric and kappa-symmetric action for a system of N nearly coincident M0-branes (mM0 system) in flat eleven dimensional (11D) superspace and obtain supersymmetric equations for this dynamical system. Although a single M0-brane is the massless 11D superparticle, center of energy motion of the mM0 system is characterized by a nonnegative constant mass M constructed from the matrix fields describing the relative motion of mM0 constituents. We show that a bosonic solution of the mM0 equations can be supersymmetric iff this effective mass vanishes, M=0, and that all the supersymmetric bosonic solutions preserve just one half of the 11D supersymmetry.
|
2402.15835
|
Somnath Porey
|
Vinay Malvimat, Somnath Porey and Baishali Roy
|
Krylov Complexity in $2d$ CFTs with SL$(2,\mathbb{R})$ deformed
Hamiltonians
|
26 pages, 13 figures
| null | null | null |
hep-th cond-mat.str-el quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
In this study, we analyze Krylov Complexity in two-dimensional conformal
field theories subjected to deformed SL$(2,\mathbb{R})$ Hamiltonians. In the
vacuum state, we find that the K-complexity exhibits a universal phase
structure. The phase structure involves the K-complexity exhibiting an
oscillatory behaviour in the non-heating phase, which contrasts with the
exponential growth observed in the heating phase, while it displays polynomial
growth at the phase boundary. Furthermore, we extend our analysis to compute
the K-complexity of a light operator in excited states, considering both
large-c CFT and free field theory. In the free field theory, we find a
state-independent phase structure of K-complexity. However, in the large-c CFT,
the behavior varies, with the K-Complexity once again displaying exponential
growth in the heating phase and polynomial growth at the phase boundary.
Notably, the precise exponent governing this growth depends on the heaviness of
the state under examination. In the non-heating phase, we observe a transition
in K-complexity behavior from oscillatory to exponential growth, akin to
findings in [1], as it represents a special case within the non-heating phase.
|
[
{
"created": "Sat, 24 Feb 2024 15:14:19 GMT",
"version": "v1"
}
] |
2024-02-27
|
[
[
"Malvimat",
"Vinay",
""
],
[
"Porey",
"Somnath",
""
],
[
"Roy",
"Baishali",
""
]
] |
In this study, we analyze Krylov Complexity in two-dimensional conformal field theories subjected to deformed SL$(2,\mathbb{R})$ Hamiltonians. In the vacuum state, we find that the K-complexity exhibits a universal phase structure. The phase structure involves the K-complexity exhibiting an oscillatory behaviour in the non-heating phase, which contrasts with the exponential growth observed in the heating phase, while it displays polynomial growth at the phase boundary. Furthermore, we extend our analysis to compute the K-complexity of a light operator in excited states, considering both large-c CFT and free field theory. In the free field theory, we find a state-independent phase structure of K-complexity. However, in the large-c CFT, the behavior varies, with the K-Complexity once again displaying exponential growth in the heating phase and polynomial growth at the phase boundary. Notably, the precise exponent governing this growth depends on the heaviness of the state under examination. In the non-heating phase, we observe a transition in K-complexity behavior from oscillatory to exponential growth, akin to findings in [1], as it represents a special case within the non-heating phase.
|
1904.11894
|
Mikhail Mikhasenko
|
M. Mikhasenko, Y. Wunderlich, A. Jackura, V. Mathieu, A. Pilloni, B.
Ketzer, A. P. Szczepaniak
|
Three-body scattering: Ladders and Resonances
|
15 pages, 1 figure
| null |
10.1007/JHEP08(2019)080
|
JLAB-THY-19-2924
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss unitarity constraints on the dynamics of a system of three
interacting particles. We show how the short-range interaction that describes
three-body resonances can be separated from the long-range exchange processes,
in particular the one-pion-exchange process. It is demonstrated that unitarity
demands a specific functional form of the amplitude with a clear
interpretation: the bare three-particle resonances are dressed by the initial-
and final-state interaction, in a way that is consistent with the considered
long-range forces. We postulate that the resonance kernel admits a
factorization in the energy variables of the initial- and the final-state
particles. The factorization assumption leads to an algebraic form for the
unitarity equations, which is reminiscent of the well-known two-body-unitarity
condition and approaches it in the limit of the narrow-resonance approximation.
|
[
{
"created": "Fri, 26 Apr 2019 15:23:27 GMT",
"version": "v1"
}
] |
2019-09-04
|
[
[
"Mikhasenko",
"M.",
""
],
[
"Wunderlich",
"Y.",
""
],
[
"Jackura",
"A.",
""
],
[
"Mathieu",
"V.",
""
],
[
"Pilloni",
"A.",
""
],
[
"Ketzer",
"B.",
""
],
[
"Szczepaniak",
"A. P.",
""
]
] |
We discuss unitarity constraints on the dynamics of a system of three interacting particles. We show how the short-range interaction that describes three-body resonances can be separated from the long-range exchange processes, in particular the one-pion-exchange process. It is demonstrated that unitarity demands a specific functional form of the amplitude with a clear interpretation: the bare three-particle resonances are dressed by the initial- and final-state interaction, in a way that is consistent with the considered long-range forces. We postulate that the resonance kernel admits a factorization in the energy variables of the initial- and the final-state particles. The factorization assumption leads to an algebraic form for the unitarity equations, which is reminiscent of the well-known two-body-unitarity condition and approaches it in the limit of the narrow-resonance approximation.
|
2109.01834
|
Katarzyna Ole\'s
|
C. Adam, D. Ciurla, K. Oles, T. Romanczukiewicz, A. Wereszczynski
|
Sphalerons and resonance phenomenon in kink-antikink collisions
|
12 pages, 6 figures
| null |
10.1103/PhysRevD.104.105022
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that in some kink-antikink (KAK) collisions sphalerons, i.e.,
unstable static solutions - rather than the asymptotic free soliton states -
can be the source of the internal degrees of freedom (normal modes) which
trigger the resonance phenomenon responsible for the fractal structure in the
final state formation.
|
[
{
"created": "Sat, 4 Sep 2021 10:07:12 GMT",
"version": "v1"
}
] |
2021-12-15
|
[
[
"Adam",
"C.",
""
],
[
"Ciurla",
"D.",
""
],
[
"Oles",
"K.",
""
],
[
"Romanczukiewicz",
"T.",
""
],
[
"Wereszczynski",
"A.",
""
]
] |
We show that in some kink-antikink (KAK) collisions sphalerons, i.e., unstable static solutions - rather than the asymptotic free soliton states - can be the source of the internal degrees of freedom (normal modes) which trigger the resonance phenomenon responsible for the fractal structure in the final state formation.
|
hep-th/9510046
|
Frank Zimmerschied
|
Jian-Ge Zhou, F. Zimmerschied, J.-Q. Liang and H.J.W. Mueller-Kirsten
|
BRST invariant approach to quantum mechanical tunneling
|
9 pages, LaTex
|
Phys.Lett. B365 (1996) 163
|
10.1016/0370-2693(95)01268-0
|
KL-TH 95/16
|
hep-th
| null |
A new approach with BRST invariance is suggested to cure the degeneracy
problem of ill defined path integrals in the path-integral calculationof
quantum mechanical tunneling effects in which the problem arises due to the
occurrence of zero modes. The Faddeev-Popov procedure is avoided and the
integral over the zero mode is transformed in a systematic way into a well
defined integral over instanton positions. No special procedure has to be
adopted as in the Faddeev-Popov method in calculating the Jacobian of the
transformation. The quantum mechanical tunneling for the Sine-Gordon potential
is used as a test of the method and the width of the lowest energy band is
obtained in exact agreement with that of WKB calculations.
|
[
{
"created": "Mon, 9 Oct 1995 16:32:26 GMT",
"version": "v1"
}
] |
2009-10-28
|
[
[
"Zhou",
"Jian-Ge",
""
],
[
"Zimmerschied",
"F.",
""
],
[
"Liang",
"J. -Q.",
""
],
[
"Mueller-Kirsten",
"H. J. W.",
""
]
] |
A new approach with BRST invariance is suggested to cure the degeneracy problem of ill defined path integrals in the path-integral calculationof quantum mechanical tunneling effects in which the problem arises due to the occurrence of zero modes. The Faddeev-Popov procedure is avoided and the integral over the zero mode is transformed in a systematic way into a well defined integral over instanton positions. No special procedure has to be adopted as in the Faddeev-Popov method in calculating the Jacobian of the transformation. The quantum mechanical tunneling for the Sine-Gordon potential is used as a test of the method and the width of the lowest energy band is obtained in exact agreement with that of WKB calculations.
|
1212.2210
|
Paul McGuirk
|
Paul McGuirk
|
Falling flavors in AdS/CFT
|
38+13 pages, 8 figures. Summary of results, clarifications, and
citations added. Version to appear in JHEP
|
JHEP 1307:102 (2013)
|
10.1007/JHEP07(2013)102
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the behavior of D7 probes of supersymmetric warped geometries
that are perturbed by the presence of anti-D3-branes. Such constructions are
the gravitational duals of non-supersymmetric states in supersymmetric flavored
gauge theories. Although the D7s that we consider do not feel a force from
either D3s or anti-D3s alone, when both types of 3-branes are present the D7s
deform and fall a small distance toward the 3-branes. We perform our analysis
in AdS^5 x S^5 and the Klebanov-Witten solution and find qualitatively similar
behavior in each case. We then extend our consideration to the approximately
conical region of the Klebanov-Strassler solution and find that the effect is
parametrically larger than in the AdS^5 x X^5 examples. Additionally, we
discuss how these behaviors are modified by the presence of other flavors by
considering the backreaction of such flavor branes in AdS^5 x X^5. Finally, we
touch upon some of the implications that our results may have for model
building and argue that the deformation of the worldvolume results in
non-negligible corrections to soft terms in the low-energy description.
|
[
{
"created": "Mon, 10 Dec 2012 21:00:00 GMT",
"version": "v1"
},
{
"created": "Mon, 1 Jul 2013 13:25:54 GMT",
"version": "v2"
}
] |
2013-07-18
|
[
[
"McGuirk",
"Paul",
""
]
] |
We consider the behavior of D7 probes of supersymmetric warped geometries that are perturbed by the presence of anti-D3-branes. Such constructions are the gravitational duals of non-supersymmetric states in supersymmetric flavored gauge theories. Although the D7s that we consider do not feel a force from either D3s or anti-D3s alone, when both types of 3-branes are present the D7s deform and fall a small distance toward the 3-branes. We perform our analysis in AdS^5 x S^5 and the Klebanov-Witten solution and find qualitatively similar behavior in each case. We then extend our consideration to the approximately conical region of the Klebanov-Strassler solution and find that the effect is parametrically larger than in the AdS^5 x X^5 examples. Additionally, we discuss how these behaviors are modified by the presence of other flavors by considering the backreaction of such flavor branes in AdS^5 x X^5. Finally, we touch upon some of the implications that our results may have for model building and argue that the deformation of the worldvolume results in non-negligible corrections to soft terms in the low-energy description.
|
hep-th/0602017
|
Vitor Cardoso
|
Vitor Cardoso, Oscar J. C. Dias
|
Rayleigh-Plateau and Gregory-Laflamme instabilities of black strings
|
4 pages, 2 Figures. RevTex4. v2: Added section discussing the
existence of a critical dimension also in the fluid model. v3: Added
discussion on breakup time, plot of instability corrected (now much more
similar to G-L). Version to appear in Phys. Rev. Lett
|
Phys.Rev.Lett.96:181601,2006
|
10.1103/PhysRevLett.96.181601
|
NSF-KITP-06-08
|
hep-th gr-qc hep-ph physics.flu-dyn
| null |
Many and very general arguments indicate that the event horizon behaves as a
stretched membrane. We explore this analogy by associating the Gregory-Laflamme
instability of black strings with a classical membrane instability known as
Rayleigh-Plateau instability. We show that the key features of the black string
instability can be reproduced using this viewpoint. In particular, we get good
agreement for the threshold mode in all dimensions and exact agreement for
large spacetime dimensionality. The instability timescale is also well
described within this model, as well as the dimensionality dependence. We
conjecture that general non-axisymmetric perturbations are stable. We further
argue that the instability of ultra-spinning black holes follows from this
model.
|
[
{
"created": "Thu, 2 Feb 2006 04:16:40 GMT",
"version": "v1"
},
{
"created": "Fri, 10 Feb 2006 21:52:58 GMT",
"version": "v2"
},
{
"created": "Mon, 1 May 2006 16:35:09 GMT",
"version": "v3"
}
] |
2008-11-26
|
[
[
"Cardoso",
"Vitor",
""
],
[
"Dias",
"Oscar J. C.",
""
]
] |
Many and very general arguments indicate that the event horizon behaves as a stretched membrane. We explore this analogy by associating the Gregory-Laflamme instability of black strings with a classical membrane instability known as Rayleigh-Plateau instability. We show that the key features of the black string instability can be reproduced using this viewpoint. In particular, we get good agreement for the threshold mode in all dimensions and exact agreement for large spacetime dimensionality. The instability timescale is also well described within this model, as well as the dimensionality dependence. We conjecture that general non-axisymmetric perturbations are stable. We further argue that the instability of ultra-spinning black holes follows from this model.
|
hep-ph/0211062
|
Emilio Torrente-Lujan
|
P. Aliani, V. Antonelli, R. Ferrari, M. Picariello, E. Torrente-Lujan
|
After Sno and Before Kamland: Present and Future of Solar and Reactor
Neutrino Physics
|
Expanded version of the contribution to appear in the Proceedings of
''Third Tropical Workshop on Particle Physics and Cosmology: Neutrinos,
Branes and Cosmology (Puerto Rico, August 2002)''
|
AIP Conf.Proc. 655 (2003) 103-121
|
10.1063/1.1543492
|
FTUAM-567-2002
|
hep-ph
| null |
We present a short review of the existing evidence in favor of neutrino mass
and neutrino oscillations which come from different kinds of experiments. We
focus our attention in particular on solar neutrinos, presenting a review of
some recent analysis of all available neutrino oscillation evidence in Solar
experiments including the recent $SNO CC$ and $NC$ data. We present in detail
the power of the reactor experiment KamLAND for discriminating existing
solutions to the SNP and giving accurate information on neutrino masses and
mixing angles.
|
[
{
"created": "Tue, 5 Nov 2002 20:25:17 GMT",
"version": "v1"
}
] |
2007-06-22
|
[
[
"Aliani",
"P.",
""
],
[
"Antonelli",
"V.",
""
],
[
"Ferrari",
"R.",
""
],
[
"Picariello",
"M.",
""
],
[
"Torrente-Lujan",
"E.",
""
]
] |
We present a short review of the existing evidence in favor of neutrino mass and neutrino oscillations which come from different kinds of experiments. We focus our attention in particular on solar neutrinos, presenting a review of some recent analysis of all available neutrino oscillation evidence in Solar experiments including the recent $SNO CC$ and $NC$ data. We present in detail the power of the reactor experiment KamLAND for discriminating existing solutions to the SNP and giving accurate information on neutrino masses and mixing angles.
|
2009.03909
|
Renato Fonseca
|
Andreas Ekstedt, Renato M. Fonseca and Michal Malinsk\'y
|
Flavorgenesis
|
9 pages
| null |
10.1016/j.physletb.2021.136212
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a model where all fermions are contained in a single irreducible
representation of an SU(19) gauge symmetry group. If there is only one scalar
field, Yukawa interactions are controlled by a single number rather than by one
or more $3\times3$ matrices of couplings. The low-energy concept of flavor
emerges entirely from the scalar-sector parameters; more specifically, entries
of the Standard Model Yukawa matrices are controlled by several vacuum
expectation values.
|
[
{
"created": "Tue, 8 Sep 2020 18:00:02 GMT",
"version": "v1"
}
] |
2021-03-17
|
[
[
"Ekstedt",
"Andreas",
""
],
[
"Fonseca",
"Renato M.",
""
],
[
"Malinský",
"Michal",
""
]
] |
We present a model where all fermions are contained in a single irreducible representation of an SU(19) gauge symmetry group. If there is only one scalar field, Yukawa interactions are controlled by a single number rather than by one or more $3\times3$ matrices of couplings. The low-energy concept of flavor emerges entirely from the scalar-sector parameters; more specifically, entries of the Standard Model Yukawa matrices are controlled by several vacuum expectation values.
|
hep-ph/0411144
|
Mar Bastero-Gil
|
Mar Bastero-Gil and Arjun Berera
|
Determining the regimes of cold and warm inflation in the susy hybrid
model
|
paragraph added at the end of section V; references added; accepted
for publication in Phys. Rev. D
|
Phys.Rev. D71 (2005) 063515
|
10.1103/PhysRevD.71.063515
|
UG-FT-177/04
|
hep-ph
| null |
The SUSY hybrid inflation model is found to dissipate radiation during the
inflationary period. Analysis is made of parameter regimes in which these
dissipative effects are significant. The scalar spectral index, its running,
and the tensor-scalar ratio are computed in the entire parameter range of the
model. A clear prediction for strong dissipative warm inflation is found for
n_S-1 \simeq 0.98 and a low tensor-scalar ratio much below 10^{-6}. The strong
dissipative warm inflation regime also is found to have no \eta-problem and
with the field amplitude much below the Planck scale. As will be discussed,
this has important theoretical implications in permitting a much wider variety
of SUGRA extensions to the basic model.
|
[
{
"created": "Wed, 10 Nov 2004 14:56:28 GMT",
"version": "v1"
},
{
"created": "Mon, 31 Jan 2005 14:16:05 GMT",
"version": "v2"
}
] |
2009-11-10
|
[
[
"Bastero-Gil",
"Mar",
""
],
[
"Berera",
"Arjun",
""
]
] |
The SUSY hybrid inflation model is found to dissipate radiation during the inflationary period. Analysis is made of parameter regimes in which these dissipative effects are significant. The scalar spectral index, its running, and the tensor-scalar ratio are computed in the entire parameter range of the model. A clear prediction for strong dissipative warm inflation is found for n_S-1 \simeq 0.98 and a low tensor-scalar ratio much below 10^{-6}. The strong dissipative warm inflation regime also is found to have no \eta-problem and with the field amplitude much below the Planck scale. As will be discussed, this has important theoretical implications in permitting a much wider variety of SUGRA extensions to the basic model.
|
1607.04369
|
Andrea Zanzi
|
Andrea Zanzi
|
Quantum mechanics before the big bang in heterotic-M-theory
|
10 pages
| null | null | null |
hep-th quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this letter we investigate the role played by quantum mechanics before the
big-bang in heterotic-M-theory assuming an orbifold compactification of time.
As we will see particles are localized around a black hole but only in regions
where a constructive quantum interference takes place. We infer that the
creation of this interference pattern is interesting for many reasons: (A) it
is a mechanism to localize particles on $S^4$ branes; (B) the Casimir potential
for the dilaton can be interpreted as a gravitational effective potential for a
two-body problem; (C) the quantum interference is a new way to define the
branes in heterotic-M-theory. Remarkably, a modified Schroedinger equation is
obtained. The stabilization of the branes' position is related to the absence
of a cosmological singularity.
|
[
{
"created": "Fri, 15 Jul 2016 03:16:19 GMT",
"version": "v1"
}
] |
2016-07-18
|
[
[
"Zanzi",
"Andrea",
""
]
] |
In this letter we investigate the role played by quantum mechanics before the big-bang in heterotic-M-theory assuming an orbifold compactification of time. As we will see particles are localized around a black hole but only in regions where a constructive quantum interference takes place. We infer that the creation of this interference pattern is interesting for many reasons: (A) it is a mechanism to localize particles on $S^4$ branes; (B) the Casimir potential for the dilaton can be interpreted as a gravitational effective potential for a two-body problem; (C) the quantum interference is a new way to define the branes in heterotic-M-theory. Remarkably, a modified Schroedinger equation is obtained. The stabilization of the branes' position is related to the absence of a cosmological singularity.
|
1211.0798
|
Marco Matone
|
Alon E. Faraggi and Marco Matone
|
Energy Quantisation and Time Parameterisation
|
11 pages. The main addition concerns a discussion on the variational
principle in the case of discrete energy spectra (Jacobi's Theorem).
References added
|
Eur. Phys. J. C 74 (2014) 2694
|
10.1140/epjc/s10052-013-2694-1
|
LTH-961
|
hep-th quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that if space is compact, then trajectories cannot be defined in the
framework of quantum Hamilton--Jacobi equation. The starting point is the
simple observation that when the energy is quantized it is not possible to make
variations with respect to the energy, and the time parameterisation
t-t_0=\partial_E S_0, implied by Jacobi's theorem and that leads to group
velocity, is ill defined. It should be stressed that this follows directly form
the quantum HJ equation without any axiomatic assumption concerning the
standard formulation of quantum mechanics. This provides a stringent connection
between the quantum HJ equation and the Copenhagen interpretation. Together
with tunneling and the energy quantization theorem for confining potentials,
formulated in the framework of quantum HJ equation, it leads to the main
features of the axioms of quantum mechanics from a unique geometrical
principle. Similarly to the case of the classical HJ equation, this fixes its
quantum analog by requiring that there exist point transformations, rather than
canonical ones, leading to the trivial hamiltonian. This is equivalent to a
basic cocycle condition on the states. Such a cocycle condition can be
implemented on compact spaces, so that continuous energy spectra are allowed
only as a limiting case. Remarkably, a compact space would also imply that the
Dirac and von Neumann formulations of quantum mechanics essentially coincide.
We suggest that there is a definition of time parameterisation leading to
trajectories in the context of the quantum HJ equation having the probabilistic
interpretation of the Copenhagen School.
|
[
{
"created": "Mon, 5 Nov 2012 09:20:15 GMT",
"version": "v1"
},
{
"created": "Thu, 26 Dec 2013 15:24:33 GMT",
"version": "v2"
}
] |
2014-01-24
|
[
[
"Faraggi",
"Alon E.",
""
],
[
"Matone",
"Marco",
""
]
] |
We show that if space is compact, then trajectories cannot be defined in the framework of quantum Hamilton--Jacobi equation. The starting point is the simple observation that when the energy is quantized it is not possible to make variations with respect to the energy, and the time parameterisation t-t_0=\partial_E S_0, implied by Jacobi's theorem and that leads to group velocity, is ill defined. It should be stressed that this follows directly form the quantum HJ equation without any axiomatic assumption concerning the standard formulation of quantum mechanics. This provides a stringent connection between the quantum HJ equation and the Copenhagen interpretation. Together with tunneling and the energy quantization theorem for confining potentials, formulated in the framework of quantum HJ equation, it leads to the main features of the axioms of quantum mechanics from a unique geometrical principle. Similarly to the case of the classical HJ equation, this fixes its quantum analog by requiring that there exist point transformations, rather than canonical ones, leading to the trivial hamiltonian. This is equivalent to a basic cocycle condition on the states. Such a cocycle condition can be implemented on compact spaces, so that continuous energy spectra are allowed only as a limiting case. Remarkably, a compact space would also imply that the Dirac and von Neumann formulations of quantum mechanics essentially coincide. We suggest that there is a definition of time parameterisation leading to trajectories in the context of the quantum HJ equation having the probabilistic interpretation of the Copenhagen School.
|
hep-ph/0212224
|
Jean-Marc Richard
|
Jean-Marc Richard
|
Double Charm Physics
|
9 pages, 5 figures, latex with cernrep.cls, Contribution to the
Compass Workshop, CERN, Sept. 26-27, 2002, Proc. to appear as a CERN Yellow
Report
| null | null | null |
hep-ph
| null |
We review the weak-decay and spectroscopy properties of baryons with two
charmed quarks. We also present the convergent speculations on exotic mesons
$(QQ\bar{q}\bar{q})$ with two heavy quarks and two light antiquarks.
|
[
{
"created": "Mon, 16 Dec 2002 13:51:01 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Richard",
"Jean-Marc",
""
]
] |
We review the weak-decay and spectroscopy properties of baryons with two charmed quarks. We also present the convergent speculations on exotic mesons $(QQ\bar{q}\bar{q})$ with two heavy quarks and two light antiquarks.
|
1103.4786
|
Carina Popovici
|
C. Popovici, P. Watson and H. Reinhardt
|
Higher order heavy quark Green's functions in Coulomb gauge
|
21 pages, 10 figures
|
Phys.Rev.D83:125018,2011
|
10.1103/PhysRevD.83.125018
| null |
hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Dyson-Schwinger equation for the 4-point quark Green's functions is
studied. In the limit of the heavy quark mass and with the truncation to
include only the dressed two point functions for the Yang-Mills sector, we
provide an exact solution for the 4-point quark Green's functions, in both
quark-antiquark and diquark channels, and show that the corresponding poles
relate to the bound state energy of the heavy quark systems. Moreover, a
natural separation between physical and unphysical poles in the Green's
functions emerges.
|
[
{
"created": "Thu, 24 Mar 2011 15:28:18 GMT",
"version": "v1"
}
] |
2011-07-04
|
[
[
"Popovici",
"C.",
""
],
[
"Watson",
"P.",
""
],
[
"Reinhardt",
"H.",
""
]
] |
The Dyson-Schwinger equation for the 4-point quark Green's functions is studied. In the limit of the heavy quark mass and with the truncation to include only the dressed two point functions for the Yang-Mills sector, we provide an exact solution for the 4-point quark Green's functions, in both quark-antiquark and diquark channels, and show that the corresponding poles relate to the bound state energy of the heavy quark systems. Moreover, a natural separation between physical and unphysical poles in the Green's functions emerges.
|
1306.2080
|
Xiang Liu
|
Dian-Yong Chen, Xiang Liu and Takayuki Matsuki
|
Novel charged charmoniumlike structures in the hidden-charm dipion
decays of Y(4360)
|
5 pages, 2 figures, 1 table. More discussions added. Accepted by
Phys. Rev. D
|
Phys.Rev.D88:014034,2013
|
10.1103/PhysRevD.88.014034
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Studying the hidden-charm dipion decays of the charmoniumlike state Y(4360),
we show that there exist charged charmoniumlike structures near $D\bar{D}^*$
and $D^*\bar{D}^*$ thresholds in the $J/\psi\pi^+$, $\psi(2S)\pi^+$ and
$h_c(1P)\pi^+$ invariant mass spectra of the corresponding hidden-charm dipion
decays of Y(4360) using the {\it{Initial Single Pion Emission} mechanism}. We
suggest to do further experimental study on these predicted charged enhancement
structures, especially by BESIII, Belle, and the forthcoming BelleII.
|
[
{
"created": "Mon, 10 Jun 2013 01:35:47 GMT",
"version": "v1"
},
{
"created": "Sat, 13 Jul 2013 08:10:11 GMT",
"version": "v2"
}
] |
2013-07-23
|
[
[
"Chen",
"Dian-Yong",
""
],
[
"Liu",
"Xiang",
""
],
[
"Matsuki",
"Takayuki",
""
]
] |
Studying the hidden-charm dipion decays of the charmoniumlike state Y(4360), we show that there exist charged charmoniumlike structures near $D\bar{D}^*$ and $D^*\bar{D}^*$ thresholds in the $J/\psi\pi^+$, $\psi(2S)\pi^+$ and $h_c(1P)\pi^+$ invariant mass spectra of the corresponding hidden-charm dipion decays of Y(4360) using the {\it{Initial Single Pion Emission} mechanism}. We suggest to do further experimental study on these predicted charged enhancement structures, especially by BESIII, Belle, and the forthcoming BelleII.
|
hep-ph/0412033
|
Andrew Pawl
|
Andrew Pawl
|
Q-ball Formation in Affleck-Dine Baryogenesis with Gravity-mediated SUSY
Breaking
|
19 pages, 1 figure. Uses elsart.cls
|
Nucl.Phys.B679:231-245,2004
|
10.1016/j.nuclphysb.2003.12.020
|
MCTP-03-52
|
hep-ph
| null |
To date, the properties of Q-balls arising from an Affleck-Dine condensate in
gravity-mediated SUSY breaking have been obtained primarily through numerical
simulations. In this work, we will derive the expected charge of the Q-balls
formed in such a scenario through an analytical treatment. We will also examine
the numerically observed difference between Q-ball formation in weakly charged
condensates and formation in strongly charged condensates.
|
[
{
"created": "Thu, 2 Dec 2004 15:48:26 GMT",
"version": "v1"
}
] |
2009-12-31
|
[
[
"Pawl",
"Andrew",
""
]
] |
To date, the properties of Q-balls arising from an Affleck-Dine condensate in gravity-mediated SUSY breaking have been obtained primarily through numerical simulations. In this work, we will derive the expected charge of the Q-balls formed in such a scenario through an analytical treatment. We will also examine the numerically observed difference between Q-ball formation in weakly charged condensates and formation in strongly charged condensates.
|
hep-th/9704116
|
Balachandran Sathiapalan
|
B. Sathiapalan
|
Loop Variables and Gauge Invariant Interactions in String Theory
|
Latex file 13 pages. Talk given at the Puri Workshop on Frontiers in
Field Theory, Quantum Gravity and String Theory, in Dec 1996
| null | null |
IMSC/97/04/13
|
hep-th
| null |
We describe a method of writing down the exact interacting gauge invariant
equations for all the modes of the bosonic open string. It is a generalization
of the loop variable approach that was used earlier for the free, and lowest
order interacting cases. The generalization involves, as before, the
introduction of a parameter to label the different strings involved in an
interaction. The interacting string has thus becomes a ``band'' of finite
width. As in the free case, the fields appear to be massless in one higher
dimension. Although a proof of the consistency and gauge invariance to all
orders (and thus of equivalence with string theory) is not yet available,
plausibility arguments are given. We also give some simple illustrations of the
procedure.
|
[
{
"created": "Tue, 15 Apr 1997 04:53:50 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Sathiapalan",
"B.",
""
]
] |
We describe a method of writing down the exact interacting gauge invariant equations for all the modes of the bosonic open string. It is a generalization of the loop variable approach that was used earlier for the free, and lowest order interacting cases. The generalization involves, as before, the introduction of a parameter to label the different strings involved in an interaction. The interacting string has thus becomes a ``band'' of finite width. As in the free case, the fields appear to be massless in one higher dimension. Although a proof of the consistency and gauge invariance to all orders (and thus of equivalence with string theory) is not yet available, plausibility arguments are given. We also give some simple illustrations of the procedure.
|
hep-ph/0204285
|
V. Shevchenko
|
V.Shevchenko, Yu.Simonov
|
Interaction of Wilson loops in confining vacuum
|
LaTeX, 25 pages, 5 EPS-figures
|
Phys.Rev.D66:056012,2002
|
10.1103/PhysRevD.66.056012
| null |
hep-ph
| null |
Nonperturbative and perturbative interaction mechanisms of Wilson loops in
gluodynamics are studied within the background field formalism. The first one
operates when distance between minimal surfaces of the loops is small and may
be important for sea quark effects and strong decay processes. The second
mechanism -- perturbative interaction in nonperturbative confining background
is found to be physically dominant for all loop configurations characteristic
of scattering process. It reduces to perturbative gluon exchanges at small
distances, while at larger distances it corresponds to the t-channel exchange
of (reggeized) glueball states.
Comparison to other approaches is made and possible physical applications are
discussed.
|
[
{
"created": "Wed, 24 Apr 2002 14:56:13 GMT",
"version": "v1"
}
] |
2014-11-17
|
[
[
"Shevchenko",
"V.",
""
],
[
"Simonov",
"Yu.",
""
]
] |
Nonperturbative and perturbative interaction mechanisms of Wilson loops in gluodynamics are studied within the background field formalism. The first one operates when distance between minimal surfaces of the loops is small and may be important for sea quark effects and strong decay processes. The second mechanism -- perturbative interaction in nonperturbative confining background is found to be physically dominant for all loop configurations characteristic of scattering process. It reduces to perturbative gluon exchanges at small distances, while at larger distances it corresponds to the t-channel exchange of (reggeized) glueball states. Comparison to other approaches is made and possible physical applications are discussed.
|
hep-ph/9712228
|
Robert Harlander
|
R. Harlander, T. Seidensticker and M. Steinhauser
|
Complete Corrections of O(\alpha\alpha_s) to the Decay of the Z Boson
into Bottom Quarks
|
Latex, 11 pages, 1 figure included as ps-file. Two references
changed. The complete paper is also available via anonymous ftp at
ftp://ttpux2.physik.uni-karlsruhe.de/ttp97/ttp97-52/ or via www at
http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/
|
Phys.Lett. B426 (1998) 125-132
|
10.1016/S0370-2693(98)00220-2
|
MPI/PhT/97-81, TTP97-52
|
hep-ph
| null |
For the vertex corrections to the partial decay rate $\Gamma(Z \to b\bar{b})$
involving the top quark only the leading terms of order $\alpha\alpha_s$ in the
$1/M_t$ expansion are known. In this work we compute the missing
next-to-leading corrections. Thus at $O(\alpha\alpha_s)$ the complete
corrections to the decay of the Z boson into bottom quarks are at hand.
|
[
{
"created": "Tue, 2 Dec 1997 01:53:59 GMT",
"version": "v1"
},
{
"created": "Mon, 9 Mar 1998 09:48:34 GMT",
"version": "v2"
}
] |
2009-10-30
|
[
[
"Harlander",
"R.",
""
],
[
"Seidensticker",
"T.",
""
],
[
"Steinhauser",
"M.",
""
]
] |
For the vertex corrections to the partial decay rate $\Gamma(Z \to b\bar{b})$ involving the top quark only the leading terms of order $\alpha\alpha_s$ in the $1/M_t$ expansion are known. In this work we compute the missing next-to-leading corrections. Thus at $O(\alpha\alpha_s)$ the complete corrections to the decay of the Z boson into bottom quarks are at hand.
|
1507.07102
|
Kenneth Lane
|
Kenneth Lane and Lukas Pritchett
|
Heavy Vector Partners of the Light Composite Higgs
|
Improved discussion of Drell-Yan production; 11 pages, 2 tables, no
figures; version to appear in Physics Letters B
| null |
10.1016/j.physletb.2015.12.003
|
CERN-PH-TH-2015-175, LAPTH-042/15
|
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
If the Higgs boson $H(125)$ is a composite due to new strong interactions at
high energy, it has spin-one partners, $\rho_H$ and $a_H$, analogous to the
$\rho$ and $a_1$ mesons of QCD. These bosons are heavy, their mass determined
by the strong interaction scale. The strongly interacting particles light
enough for $\rho_H$ and $a_H$ to decay to are the longitudinal weak bosons $V_L
= W_L,\, Z_L$ and the Higgs boson $H$. These decay signatures are consistent
with resonant diboson excesses recently reported near 2 TeV by ATLAS and CMS.
We calculate $\sigma\times BR(\rho_H \to VV) =$ few fb and $\sigma\times BR(a_H
\to VH) =$ 0.5-1 fb at $\sqrt{s} =$ 8 TeV, increasing by a factor of 5-7 at 13
TeV. Other tests of the hypothesis of the strong-interaction nature of the
diboson resonances are suggested.
|
[
{
"created": "Sat, 25 Jul 2015 13:30:56 GMT",
"version": "v1"
},
{
"created": "Thu, 20 Aug 2015 12:36:35 GMT",
"version": "v2"
},
{
"created": "Wed, 26 Aug 2015 20:16:22 GMT",
"version": "v3"
},
{
"created": "Thu, 3 Dec 2015 18:05:48 GMT",
"version": "v4"
}
] |
2015-12-09
|
[
[
"Lane",
"Kenneth",
""
],
[
"Pritchett",
"Lukas",
""
]
] |
If the Higgs boson $H(125)$ is a composite due to new strong interactions at high energy, it has spin-one partners, $\rho_H$ and $a_H$, analogous to the $\rho$ and $a_1$ mesons of QCD. These bosons are heavy, their mass determined by the strong interaction scale. The strongly interacting particles light enough for $\rho_H$ and $a_H$ to decay to are the longitudinal weak bosons $V_L = W_L,\, Z_L$ and the Higgs boson $H$. These decay signatures are consistent with resonant diboson excesses recently reported near 2 TeV by ATLAS and CMS. We calculate $\sigma\times BR(\rho_H \to VV) =$ few fb and $\sigma\times BR(a_H \to VH) =$ 0.5-1 fb at $\sqrt{s} =$ 8 TeV, increasing by a factor of 5-7 at 13 TeV. Other tests of the hypothesis of the strong-interaction nature of the diboson resonances are suggested.
|
1205.6805
|
Raphael Flauger
|
Sergei Dubovsky, Raphael Flauger, Victor Gorbenko
|
Solving the Simplest Theory of Quantum Gravity
|
32+4 pages, 1 figure, v2: typos fixed, published version
|
JHEP 1209 (2012) 133
|
10.1007/JHEP09(2012)133
| null |
hep-th gr-qc hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We solve what is quite likely the simplest model of quantum gravity, the
worldsheet theory of an infinitely long, free bosonic string in Minkowski
space. Contrary to naive expectations, this theory is non-trivial. We
illustrate this by constructing its exact factorizable S-matrix. Despite its
simplicity, the theory exhibits many of the salient features expected from more
mature quantum gravity models, including the absence of local off-shell
observables, a minimal length, a maximum achievable (Hagedorn) temperature, as
well as (integrable relatives of) black holes. All these properties follow from
the exact S-matrix. We show that the complete finite volume spectrum can be
reconstructed analytically from this S-matrix with the help of the
thermodynamic Bethe Ansatz. We argue that considered as a UV complete
relativistic two-dimensional quantum field theory the model exhibits a new type
of renormalization group flow behavior, "asymptotic fragility". Asymptotically
fragile flows do not originate from a UV fixed point.
|
[
{
"created": "Wed, 30 May 2012 20:00:02 GMT",
"version": "v1"
},
{
"created": "Thu, 14 Feb 2013 21:01:33 GMT",
"version": "v2"
}
] |
2013-02-18
|
[
[
"Dubovsky",
"Sergei",
""
],
[
"Flauger",
"Raphael",
""
],
[
"Gorbenko",
"Victor",
""
]
] |
We solve what is quite likely the simplest model of quantum gravity, the worldsheet theory of an infinitely long, free bosonic string in Minkowski space. Contrary to naive expectations, this theory is non-trivial. We illustrate this by constructing its exact factorizable S-matrix. Despite its simplicity, the theory exhibits many of the salient features expected from more mature quantum gravity models, including the absence of local off-shell observables, a minimal length, a maximum achievable (Hagedorn) temperature, as well as (integrable relatives of) black holes. All these properties follow from the exact S-matrix. We show that the complete finite volume spectrum can be reconstructed analytically from this S-matrix with the help of the thermodynamic Bethe Ansatz. We argue that considered as a UV complete relativistic two-dimensional quantum field theory the model exhibits a new type of renormalization group flow behavior, "asymptotic fragility". Asymptotically fragile flows do not originate from a UV fixed point.
|
hep-ph/0410110
|
Nigel Glover
|
E.W.N. Glover (IPPP, Durham), F.del Aguila, J.A.Aguilar--Saavedra,
M.Beccaria, S.Bejar, A.Brandenburg, J.Fleischer, J.Guasch, T.Hahn, W.Hollik,
S.Heinemeyer, S.Kraml, A.Leike, A.Lorca, W.Porod, S.Prelovsek, F.M.Renard,
T.Riemann, C.Schappacher, Z.G.Si, J.Sola, P.Uwer, C.Verzegnassi, G.Weiglein
and A.Werthenbach
|
Top Quark Physics at Colliders
|
25 pages, latex, uses appolb.cls, feynart.sty, axodraw.sty, Presented
at the final meeting of the European Network "Physics at Colliders",
Montpellier, O September 25-28,2004 Title changed, refernce added
|
ActaPhys.Polon.B35:2671-2694,2004
| null |
IPPP/04/63, DCPT/04/126
|
hep-ph
| null |
We review some recent developments in top quark production and decay at
current and future colliders.
|
[
{
"created": "Thu, 7 Oct 2004 14:16:38 GMT",
"version": "v1"
},
{
"created": "Fri, 8 Oct 2004 15:20:26 GMT",
"version": "v2"
},
{
"created": "Sat, 9 Oct 2004 20:54:19 GMT",
"version": "v3"
}
] |
2008-11-26
|
[
[
"Glover",
"E. W. N.",
"",
"IPPP, Durham"
],
[
"del Aguila",
"F.",
""
],
[
"Aguilar--Saavedra",
"J. A.",
""
],
[
"Beccaria",
"M.",
""
],
[
"Bejar",
"S.",
""
],
[
"Brandenburg",
"A.",
""
],
[
"Fleischer",
"J.",
""
],
[
"Guasch",
"J.",
""
],
[
"Hahn",
"T.",
""
],
[
"Hollik",
"W.",
""
],
[
"Heinemeyer",
"S.",
""
],
[
"Kraml",
"S.",
""
],
[
"Leike",
"A.",
""
],
[
"Lorca",
"A.",
""
],
[
"Porod",
"W.",
""
],
[
"Prelovsek",
"S.",
""
],
[
"Renard",
"F. M.",
""
],
[
"Riemann",
"T.",
""
],
[
"Schappacher",
"C.",
""
],
[
"Si",
"Z. G.",
""
],
[
"Sola",
"J.",
""
],
[
"Uwer",
"P.",
""
],
[
"Verzegnassi",
"C.",
""
],
[
"Weiglein",
"G.",
""
],
[
"Werthenbach",
"A.",
""
]
] |
We review some recent developments in top quark production and decay at current and future colliders.
|
0806.0848
|
Matthew Schwartz
|
David E. Kaplan, Keith Rehermann, Matthew D. Schwartz, Brock Tweedie
|
Top-tagging: A Method for Identifying Boosted Hadronic Tops
|
4 pages, 4 figures; v2: separate quark and gluon efficiencies
included, figure on helicity angle added, and physics discussion extended
|
Phys.Rev.Lett.101:142001,2008
|
10.1103/PhysRevLett.101.142001
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A method is introduced for distinguishing top jets (boosted, hadronically
decaying top quarks) from light quark and gluon jets using jet substructure.
The procedure involves parsing the jet cluster to resolve its subjets, and then
imposing kinematic constraints. With this method, light quark or gluon jets
with pT ~ 1 TeV can be rejected with an efficiency of around 99% while
retaining up to 40% of top jets. This reduces the dijet background to heavy
t-tbar resonances by a factor of ~10,000, thereby allowing resonance searches
in t-tbar to be extended into the all-hadronic channel. In addition,
top-tagging can be used in t-tbar events when one of the tops decays
semi-leptonically, in events with missing energy, and in studies of b-tagging
efficiency at high pT.
|
[
{
"created": "Thu, 5 Jun 2008 19:57:00 GMT",
"version": "v1"
},
{
"created": "Thu, 11 Sep 2008 17:52:43 GMT",
"version": "v2"
}
] |
2008-11-26
|
[
[
"Kaplan",
"David E.",
""
],
[
"Rehermann",
"Keith",
""
],
[
"Schwartz",
"Matthew D.",
""
],
[
"Tweedie",
"Brock",
""
]
] |
A method is introduced for distinguishing top jets (boosted, hadronically decaying top quarks) from light quark and gluon jets using jet substructure. The procedure involves parsing the jet cluster to resolve its subjets, and then imposing kinematic constraints. With this method, light quark or gluon jets with pT ~ 1 TeV can be rejected with an efficiency of around 99% while retaining up to 40% of top jets. This reduces the dijet background to heavy t-tbar resonances by a factor of ~10,000, thereby allowing resonance searches in t-tbar to be extended into the all-hadronic channel. In addition, top-tagging can be used in t-tbar events when one of the tops decays semi-leptonically, in events with missing energy, and in studies of b-tagging efficiency at high pT.
|
hep-ph/0410346
|
Giovannangeli
|
P. Giovannangeli
|
Two loop renormalisation of the magnetic coupling in hot QCD and spatial
Wilson loop
|
5 pages. To appear in the proceedings of 6th Conference on Strong and
Electroweak Matter 2004 (SEWM04), Helsinki, Finland, 16-19 Jun 2004
| null |
10.1142/9789812702159_0033
| null |
hep-ph hep-lat
| null |
With the known two loop renormalisation of the magnetic coupling, the 4D
results of the spatial Wilson loop are compared to the prediction from the
magnetostatic sector.
|
[
{
"created": "Tue, 26 Oct 2004 16:33:40 GMT",
"version": "v1"
}
] |
2017-08-23
|
[
[
"Giovannangeli",
"P.",
""
]
] |
With the known two loop renormalisation of the magnetic coupling, the 4D results of the spatial Wilson loop are compared to the prediction from the magnetostatic sector.
|
hep-ph/0202099
|
Marek Karliner
|
Marek Karliner (Tel Aviv U.) and Harry J. Lipkin (Weizmann Inst. & Tel
Aviv U.)
|
On Reconciling Gottfried Sum Rule Violation with Cabibbo Theory
|
10 pages, latex
|
Phys.Lett. B533 (2002) 60-64
|
10.1016/S0370-2693(02)01600-3
|
TAUP-2694-02, WIS/3/02-JAN-DPP
|
hep-ph
| null |
We discuss the seemingly contradictory constraints of simultaneously
preserving the SU(3)-symmetric Cabibbo description of the weak vector baryon
matrix elements, accounting for SU(3) flavor symmetry breaking and describing
the observed violation of the Gottfried Sum Rule. We try to construct a simple
model that will satisfy these constraints and use it to explain the generic
difficulties and tradeoffs.
|
[
{
"created": "Mon, 11 Feb 2002 14:52:51 GMT",
"version": "v1"
}
] |
2009-11-07
|
[
[
"Karliner",
"Marek",
"",
"Tel Aviv U."
],
[
"Lipkin",
"Harry J.",
"",
"Weizmann Inst. & Tel\n Aviv U."
]
] |
We discuss the seemingly contradictory constraints of simultaneously preserving the SU(3)-symmetric Cabibbo description of the weak vector baryon matrix elements, accounting for SU(3) flavor symmetry breaking and describing the observed violation of the Gottfried Sum Rule. We try to construct a simple model that will satisfy these constraints and use it to explain the generic difficulties and tradeoffs.
|
hep-ph/0305268
|
S. Arunagiri
|
S. Arunagiri and C. Q. Geng (National Tsing Hua University, Taiwan)
|
Triple product correlations in B --> anti-Lambda p pi
|
11 pages, RevTex
| null | null | null |
hep-ph hep-ex
| null |
Triple product correlations (TPC's) involving strange quark spin are
elucidated in b --> u u(bar) s process within the standard model. They arise
when light quark masses are nonzero. As the momenta and spins of constituent
quarks are related to that of the parent hadron, the quark masses are, however
small, important and relevant in TPC studies. At this level the TPC's of
interest are of the form s_s.[p_u X p_u(bar)] and s_s.[p_s X p_u]. As an
application, we look at T-violating effects in B --> anti-Lambda p pi through
the TPC s_\Lambda.[p_\Lambda X p_p] for which triple product asymmetry is found
to be 5.7%-7.6% in the vanishing limit of the strong phase.
|
[
{
"created": "Fri, 23 May 2003 14:47:12 GMT",
"version": "v1"
},
{
"created": "Sat, 24 May 2003 18:08:56 GMT",
"version": "v2"
}
] |
2007-05-23
|
[
[
"Arunagiri",
"S.",
"",
"National Tsing Hua University, Taiwan"
],
[
"Geng",
"C. Q.",
"",
"National Tsing Hua University, Taiwan"
]
] |
Triple product correlations (TPC's) involving strange quark spin are elucidated in b --> u u(bar) s process within the standard model. They arise when light quark masses are nonzero. As the momenta and spins of constituent quarks are related to that of the parent hadron, the quark masses are, however small, important and relevant in TPC studies. At this level the TPC's of interest are of the form s_s.[p_u X p_u(bar)] and s_s.[p_s X p_u]. As an application, we look at T-violating effects in B --> anti-Lambda p pi through the TPC s_\Lambda.[p_\Lambda X p_p] for which triple product asymmetry is found to be 5.7%-7.6% in the vanishing limit of the strong phase.
|
hep-ph/9812453
| null |
R. Fiore, L.L. Jenkovszky, F. Paccanoni
|
Hadron Diffraction Dissociation and the Triple Pomeron Vertex
|
12 pages, LaTeX
|
Heavy Ion Phys. 9 (1999) 5-14
| null |
DFPD 98/TH 50, Unical-TH 5/98
|
hep-ph
| null |
Hadron diffraction dissociation is considered in the dipole Pomeron model
where the Pomeron is represented by a double pole in the J-plane. We find that
unitarity is satisfied without decoupling of the triple Pomeron vertex. The
reaction bar{p}+p --> bar{p}+X is analysed.
|
[
{
"created": "Mon, 21 Dec 1998 09:53:56 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Fiore",
"R.",
""
],
[
"Jenkovszky",
"L. L.",
""
],
[
"Paccanoni",
"F.",
""
]
] |
Hadron diffraction dissociation is considered in the dipole Pomeron model where the Pomeron is represented by a double pole in the J-plane. We find that unitarity is satisfied without decoupling of the triple Pomeron vertex. The reaction bar{p}+p --> bar{p}+X is analysed.
|
1006.3199
|
Pavlos Pasipoularides
|
G. Koutsoumbas and P. Pasipoularides
|
Black hole solutions in Horava-Lifshitz Gravity with cubic terms
|
25 pages, 3 figures, accepted in Phys. Rev. D
|
Phys.Rev.D82:044046,2010
|
10.1103/PhysRevD.82.044046
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study four dimensional non-projectable Horava-Lifshitz type gravity, in
the case of an action with terms, cubic in curvature. For special choices of
the free parameters of the model, we obtain two new analytic black hole
solutions which exhibit the standard Schwarzschild asymptotic behavior in the
large distance limit. The effect of cubic terms in the short range behavior of
the black hole solutions is discussed.
|
[
{
"created": "Wed, 16 Jun 2010 13:07:36 GMT",
"version": "v1"
},
{
"created": "Mon, 21 Jun 2010 13:56:51 GMT",
"version": "v2"
},
{
"created": "Fri, 13 Aug 2010 10:13:59 GMT",
"version": "v3"
}
] |
2014-11-21
|
[
[
"Koutsoumbas",
"G.",
""
],
[
"Pasipoularides",
"P.",
""
]
] |
We study four dimensional non-projectable Horava-Lifshitz type gravity, in the case of an action with terms, cubic in curvature. For special choices of the free parameters of the model, we obtain two new analytic black hole solutions which exhibit the standard Schwarzschild asymptotic behavior in the large distance limit. The effect of cubic terms in the short range behavior of the black hole solutions is discussed.
|
hep-th/0209074
|
Pierre Mathieu
|
P. Desrosiers, L. Lapointe and P. Mathieu
|
Jack polynomials in superspace
|
28 pages. Corrected version of lemme 3 and other minor corrections
and 2 new references; version to appear in Commun. Math. Phys
|
Commun.Math.Phys. 242 (2003) 331-360
|
10.1007/s00220-003-0933-2
| null |
hep-th math.CO math.QA nlin.SI
| null |
This work initiates the study of {\it orthogonal} symmetric polynomials in
superspace. Here we present two approaches leading to a family of orthogonal
polynomials in superspace that generalize the Jack polynomials. The first
approach relies on previous work by the authors in which eigenfunctions of the
supersymmetric extension of the trigonometric Calogero-Moser-Sutherland
Hamiltonian were constructed. Orthogonal eigenfunctions are now obtained by
diagonalizing the first nontrivial element of a bosonic tower of commuting
conserved charges not containing this Hamiltonian. Quite remarkably, the
expansion coefficients of these orthogonal eigenfunctions in the supermonomial
basis are stable with respect to the number of variables. The second and more
direct approach amounts to symmetrize products of non-symmetric Jack
polynomials with monomials in the fermionic variables. This time, the
orthogonality is inherited from the orthogonality of the non-symmetric Jack
polynomials, and the value of the norm is given explicitly.
|
[
{
"created": "Mon, 9 Sep 2002 18:24:26 GMT",
"version": "v1"
},
{
"created": "Mon, 28 Oct 2002 15:56:35 GMT",
"version": "v2"
},
{
"created": "Tue, 9 Sep 2003 15:55:53 GMT",
"version": "v3"
}
] |
2009-11-07
|
[
[
"Desrosiers",
"P.",
""
],
[
"Lapointe",
"L.",
""
],
[
"Mathieu",
"P.",
""
]
] |
This work initiates the study of {\it orthogonal} symmetric polynomials in superspace. Here we present two approaches leading to a family of orthogonal polynomials in superspace that generalize the Jack polynomials. The first approach relies on previous work by the authors in which eigenfunctions of the supersymmetric extension of the trigonometric Calogero-Moser-Sutherland Hamiltonian were constructed. Orthogonal eigenfunctions are now obtained by diagonalizing the first nontrivial element of a bosonic tower of commuting conserved charges not containing this Hamiltonian. Quite remarkably, the expansion coefficients of these orthogonal eigenfunctions in the supermonomial basis are stable with respect to the number of variables. The second and more direct approach amounts to symmetrize products of non-symmetric Jack polynomials with monomials in the fermionic variables. This time, the orthogonality is inherited from the orthogonality of the non-symmetric Jack polynomials, and the value of the norm is given explicitly.
|
hep-ph/9705207
|
Sharlene Cartier
|
M. Baker, James S. Ball and F. Zachariasen
|
Comparion of Lattice and Dual QCD Results for Heavy Quark Potentials
|
15 pages revtex
|
Phys.Rev. D56 (1997) 4400-4403
|
10.1103/PhysRevD.56.4400
|
CALT-68-2108
|
hep-ph
| null |
Lattice results and Dual QCD results for all heavy quark potentials through
order (quark mass)^${-2}$ are exhibited and compared. The agreement on the
whole is quite good, confirming the validity of Dual QCD. NOTE: (The only
important change in this replaced version is that Figure 6 has been replotted,
because the lattice data used in the original was in the wrong units.)
|
[
{
"created": "Thu, 1 May 1997 18:34:09 GMT",
"version": "v1"
},
{
"created": "Tue, 3 Jun 1997 19:06:49 GMT",
"version": "v2"
}
] |
2009-10-30
|
[
[
"Baker",
"M.",
""
],
[
"Ball",
"James S.",
""
],
[
"Zachariasen",
"F.",
""
]
] |
Lattice results and Dual QCD results for all heavy quark potentials through order (quark mass)^${-2}$ are exhibited and compared. The agreement on the whole is quite good, confirming the validity of Dual QCD. NOTE: (The only important change in this replaced version is that Figure 6 has been replotted, because the lattice data used in the original was in the wrong units.)
|
hep-th/0402054
|
Tetsuji Kimura
|
Tetsuji Kimura (KEK and Osaka Univ.)
|
Zero-mode Spectrum of Eleven-dimensional Theory on the Plane-wave
Background
|
103 pages, 3 figures. A dissertation presented to the faculty of
Osaka University in candidacy for the degree of Doctor of Science
| null | null |
KEK-TH-941, OU-HET 466
|
hep-th
| null |
In this doctoral thesis we study zero-mode spectra of Matrix theory and
eleven-dimensional supergravity on the plane-wave background. This background
is obtained via the Penrose limit of AdS_4 x S^7 and AdS_7 x S^4. The
plane-wave background is a maximally supersymmetric spacetime supported by
non-vanishing constant four-form flux in eleven-dimensional spacetime. First,
we discuss the Matrix theory on the plane-wave background suggested by
Berenstein, Maldacena and Nastase. We construct the Hamiltonian, 32
supercharges and their commutation relations. We discuss a spectrum of one
specific supermultiplet which represents the center of mass degrees of freedom
of N D0-branes. This supermultiplet would also represent a superparticle of the
eleven-dimensional supergravity in the large-N limit. Second, we study the
linearized supergravity on the plane-wave background in eleven dimensions.
Fixing the bosonic and fermionic fields in the light-cone gauge, we obtain the
spectrum of physical modes. We obtain the fact that the energies of the states
in Matrix theory completely correspond to those of fields in supergravity.
Thus, we find that the Matrix theory on the plane-wave background contains the
zero-mode spectrum of the eleven-dimensional supergravity completely. Through
this result, we can argue the Matrix theory on the plane-wave as a candidate of
quantum extension of eleven-dimensional supergravity, or as a candidate which
describes M-theory.
|
[
{
"created": "Fri, 6 Feb 2004 15:50:46 GMT",
"version": "v1"
},
{
"created": "Sat, 7 Feb 2004 15:39:02 GMT",
"version": "v2"
}
] |
2007-05-23
|
[
[
"Kimura",
"Tetsuji",
"",
"KEK and Osaka Univ."
]
] |
In this doctoral thesis we study zero-mode spectra of Matrix theory and eleven-dimensional supergravity on the plane-wave background. This background is obtained via the Penrose limit of AdS_4 x S^7 and AdS_7 x S^4. The plane-wave background is a maximally supersymmetric spacetime supported by non-vanishing constant four-form flux in eleven-dimensional spacetime. First, we discuss the Matrix theory on the plane-wave background suggested by Berenstein, Maldacena and Nastase. We construct the Hamiltonian, 32 supercharges and their commutation relations. We discuss a spectrum of one specific supermultiplet which represents the center of mass degrees of freedom of N D0-branes. This supermultiplet would also represent a superparticle of the eleven-dimensional supergravity in the large-N limit. Second, we study the linearized supergravity on the plane-wave background in eleven dimensions. Fixing the bosonic and fermionic fields in the light-cone gauge, we obtain the spectrum of physical modes. We obtain the fact that the energies of the states in Matrix theory completely correspond to those of fields in supergravity. Thus, we find that the Matrix theory on the plane-wave background contains the zero-mode spectrum of the eleven-dimensional supergravity completely. Through this result, we can argue the Matrix theory on the plane-wave as a candidate of quantum extension of eleven-dimensional supergravity, or as a candidate which describes M-theory.
|
hep-th/9806077
|
Nicholas Stephen Manton
|
N.S.Manton
|
Deconstructing Supersymmetry
|
19 pages, Tex file
|
J.Math.Phys. 40 (1999) 736-750
|
10.1063/1.532682
|
DAMTP 1998-39
|
hep-th
| null |
Two supersymmetric classical mechanical systems are discussed. Concrete
realizations are obtained by supposing that the dynamical variables take values
in a Grassmann algebra with two generators. The equations of motion are
explicitly solved.
|
[
{
"created": "Wed, 10 Jun 1998 10:56:39 GMT",
"version": "v1"
}
] |
2009-10-31
|
[
[
"Manton",
"N. S.",
""
]
] |
Two supersymmetric classical mechanical systems are discussed. Concrete realizations are obtained by supposing that the dynamical variables take values in a Grassmann algebra with two generators. The equations of motion are explicitly solved.
|
2405.16162
|
Zhen-Yu Li
|
Zhen-Yu Li, Guo-Liang Yu, Zhi-Gang Wang, Jian-Zhong Gu
|
Heavy-quark dominance and fine structure of excited heavy baryons
$\Sigma_{Q}$, $\Xi '_{Q}$ and $\Omega_{Q}$
|
8 pages, 3 figures, 2 tables
| null | null | null |
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
In the framework of the relativized quark model, the calculation of
spin-orbit interactions is improved by considering the contribution from the
light quark cluster in a singly heavy baryon. It modifies the energy level
splitting of the orbital excitation significantly and causes the emergence of
fine structures for $\Sigma_{Q}$, $\Xi '_{Q}$ and $\Omega_{Q}$ baryons. Based
on this improvement, we systematically analyze the fine structures and retest
the heavy quark dominance mechanism. This mechanism is found to be violated in
the $1P$-wave states of the $\Sigma_{c}$, $\Xi '_{c}$ and $\Omega_{c}$ baryons
although it remains effective overall, which may help to understand the nature
of the heavy quarks and strong interactions. With the predicted fine
structures, we make the precise assignments of those observed heavy baryons
which once could not be accurately explained due to their close mass values.
The method used in this work is instructive and applicable for the study of
more complex exotic hadrons, such as the heavy tetraquarks and pentaquarks.
|
[
{
"created": "Sat, 25 May 2024 10:10:52 GMT",
"version": "v1"
},
{
"created": "Sat, 3 Aug 2024 02:28:24 GMT",
"version": "v2"
}
] |
2024-08-06
|
[
[
"Li",
"Zhen-Yu",
""
],
[
"Yu",
"Guo-Liang",
""
],
[
"Wang",
"Zhi-Gang",
""
],
[
"Gu",
"Jian-Zhong",
""
]
] |
In the framework of the relativized quark model, the calculation of spin-orbit interactions is improved by considering the contribution from the light quark cluster in a singly heavy baryon. It modifies the energy level splitting of the orbital excitation significantly and causes the emergence of fine structures for $\Sigma_{Q}$, $\Xi '_{Q}$ and $\Omega_{Q}$ baryons. Based on this improvement, we systematically analyze the fine structures and retest the heavy quark dominance mechanism. This mechanism is found to be violated in the $1P$-wave states of the $\Sigma_{c}$, $\Xi '_{c}$ and $\Omega_{c}$ baryons although it remains effective overall, which may help to understand the nature of the heavy quarks and strong interactions. With the predicted fine structures, we make the precise assignments of those observed heavy baryons which once could not be accurately explained due to their close mass values. The method used in this work is instructive and applicable for the study of more complex exotic hadrons, such as the heavy tetraquarks and pentaquarks.
|
2211.16818
|
Francesco Giovanni Celiberto
|
Andr\`ee Dafne Bolognino, Francesco Giovanni Celiberto, Michael
Fucilla, Dmitry Yu. Ivanov, Mohammed M.A. Mohammed, Alessandro Papa
|
High-energy signals from heavy-flavor physics
|
6 pages, 1 figure. Presented by Michael Fucilla at "Diffraction and
Low-$x$ 2022", Corigliano Calabro (Italy), September 24-30, 2022
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Working in the hybrid high-energy/collinear factorization, where the
next-to-leading resummation of energy logarithms is combined with collinear
parton densities and fragmentation functions, we study observables sensitive to
high-energy dynamics in the context of heavy-flavor physics.
|
[
{
"created": "Wed, 30 Nov 2022 08:32:22 GMT",
"version": "v1"
}
] |
2022-12-01
|
[
[
"Bolognino",
"Andrèe Dafne",
""
],
[
"Celiberto",
"Francesco Giovanni",
""
],
[
"Fucilla",
"Michael",
""
],
[
"Ivanov",
"Dmitry Yu.",
""
],
[
"Mohammed",
"Mohammed M. A.",
""
],
[
"Papa",
"Alessandro",
""
]
] |
Working in the hybrid high-energy/collinear factorization, where the next-to-leading resummation of energy logarithms is combined with collinear parton densities and fragmentation functions, we study observables sensitive to high-energy dynamics in the context of heavy-flavor physics.
|
hep-th/0405174
|
Mariano Cadoni
|
M. Cadoni
|
Horizons and the Thermal Harmonic Oscillator
|
Content changed, title slightly modified
|
Mod.Phys.Lett.A20:1503-1511,2005
|
10.1142/S0217732305017603
| null |
hep-th
| null |
We show that two-dimensional anti-de Sitter spacetime (AdS_2) can be put in
correspondence, holographically, both with the harmonic oscillator and the free
particle. When AdS_2 has an horizon the corresponding mechanical system is a
thermal harmonic oscillator at temperature given by the Hawking temperature of
the horizon.
|
[
{
"created": "Thu, 20 May 2004 09:22:32 GMT",
"version": "v1"
},
{
"created": "Wed, 2 Jun 2004 07:50:42 GMT",
"version": "v2"
},
{
"created": "Thu, 24 Jun 2004 15:56:08 GMT",
"version": "v3"
}
] |
2010-11-05
|
[
[
"Cadoni",
"M.",
""
]
] |
We show that two-dimensional anti-de Sitter spacetime (AdS_2) can be put in correspondence, holographically, both with the harmonic oscillator and the free particle. When AdS_2 has an horizon the corresponding mechanical system is a thermal harmonic oscillator at temperature given by the Hawking temperature of the horizon.
|
2112.04695
|
El Hassan Saidi
|
E.H Saidi and L.B Drissi
|
5D N=1 super QFT: symplectic quivers
|
49 pages, 14 figures
| null |
10.1016/j.nuclphysb.2021.115632
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We develop a method to build new 5D $\mathcal{N}=1$ gauge models based on
Sasaki-Einstein manifolds $Y^{p,q}.$ These models extend the standard 5D ones
having a unitary SU$\left( p\right) _{q}$ gauge symmetry based on $% Y^{p,q}$.
Particular focus is put on the building of a gauge family with symplectic
SP$\left( 2r,\mathbb{R}\right) $ symmetry. These super QFTs are embedded in
M-theory compactified on folded toric Calabi-Yau threefolds $%
\hat{X}(Y^{2r,0})$ constructed from conical $Y^{2r,0}$. By using
outer-automorphism symmetries of 5D $\mathcal{N}=1$\textbf{\ }BPS quivers with
unitary SU$\left( 2r\right) $ gauge invariance, we also construct BPS quivers
with symplectic SP$\left( 2r,\mathbb{R}\right) $ gauge symmetry. Other related
aspects are discussed. Keywords: SCFT$_{5}$, 5D $\mathcal{N}=1$ super QFT on a
finite circle, Sasaki-Einstein manifolds, BPS quivers, outer-automorphisms.
|
[
{
"created": "Thu, 9 Dec 2021 04:27:09 GMT",
"version": "v1"
}
] |
2021-12-10
|
[
[
"Saidi",
"E. H",
""
],
[
"Drissi",
"L. B",
""
]
] |
We develop a method to build new 5D $\mathcal{N}=1$ gauge models based on Sasaki-Einstein manifolds $Y^{p,q}.$ These models extend the standard 5D ones having a unitary SU$\left( p\right) _{q}$ gauge symmetry based on $% Y^{p,q}$. Particular focus is put on the building of a gauge family with symplectic SP$\left( 2r,\mathbb{R}\right) $ symmetry. These super QFTs are embedded in M-theory compactified on folded toric Calabi-Yau threefolds $% \hat{X}(Y^{2r,0})$ constructed from conical $Y^{2r,0}$. By using outer-automorphism symmetries of 5D $\mathcal{N}=1$\textbf{\ }BPS quivers with unitary SU$\left( 2r\right) $ gauge invariance, we also construct BPS quivers with symplectic SP$\left( 2r,\mathbb{R}\right) $ gauge symmetry. Other related aspects are discussed. Keywords: SCFT$_{5}$, 5D $\mathcal{N}=1$ super QFT on a finite circle, Sasaki-Einstein manifolds, BPS quivers, outer-automorphisms.
|
1708.04093
|
Zolt\'an Tulip\'ant
|
Zolt\'an Tulip\'ant, Adam Kardos and G\'abor Somogyi
|
Energy-energy correlation in electron-positron annihilation at NNLL+NNLO
accuracy
|
24 pages, 7 figures and 1 table, published version
| null |
10.1140/epjc/s10052-017-5320-9
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the computation of energy-energy correlation in $e^+e^-$
collisions in the back-to-back region at next-to-next-to-leading logarithmic
accuracy matched with the next-to-next-to-leading order perturbative
prediction. We study the effect of the fixed higher order corrections in a
comparison of our results to LEP and SLC data. The next-to-next-to-leading
order correction has a sizable impact on the extracted value of
$\alpha_{\mathrm S}(M_Z)$, hence its inclusion is mandatory for a precise
measurement of the strong coupling using energy-energy correlation.
|
[
{
"created": "Mon, 14 Aug 2017 12:21:51 GMT",
"version": "v1"
},
{
"created": "Wed, 15 Nov 2017 10:00:27 GMT",
"version": "v2"
}
] |
2017-12-06
|
[
[
"Tulipánt",
"Zoltán",
""
],
[
"Kardos",
"Adam",
""
],
[
"Somogyi",
"Gábor",
""
]
] |
We present the computation of energy-energy correlation in $e^+e^-$ collisions in the back-to-back region at next-to-next-to-leading logarithmic accuracy matched with the next-to-next-to-leading order perturbative prediction. We study the effect of the fixed higher order corrections in a comparison of our results to LEP and SLC data. The next-to-next-to-leading order correction has a sizable impact on the extracted value of $\alpha_{\mathrm S}(M_Z)$, hence its inclusion is mandatory for a precise measurement of the strong coupling using energy-energy correlation.
|
1105.3847
|
Alexander Titov
|
A.I. Titov and B. Kampfer
|
Exclusive $\bar\Xi\Xi$ and $\bar\Xi_c\Xi_c$ production in $\bar pp$
collisions at $\sqrt{s}\leq 15$ GeV
|
4 pages, 7 figures
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Estimates of differential cross sections and longitudinal asymmetries are
presented for the reactions $\bar pp\to \bar \Xi\Xi$ and $\bar pp\to \bar
\Xi_c\Xi_c$ at energies $\sqrt{s}\lesssim 15$ GeV. The $\Xi$ and $\Xi_c$
hyperons are assumed to be produced in two-step processes: first, intermediate
$\bar\Lambda\Lambda$ and/or $\bar\Lambda_c\Lambda_c$ states are created which
are converted afterwards into final states $\bar \Xi\Xi$, $\bar \Xi_c\Xi_c$ and
$\bar \Xi_c\Xi_c$. The full amplitudes are described by loop diagrams within a
modified Regge model, based on the topological decomposition of planar quark
diagrams. A strong sensitivity of the ratio of yields of $\bar \Xi_c\Xi_c$ to
$\bar \Xi\Xi$ and of $\bar \Lambda_c\Lambda_c$ to $\bar \Lambda\Lambda$ to the
degree of SU(4) symmetry violation is found.
|
[
{
"created": "Thu, 19 May 2011 12:04:40 GMT",
"version": "v1"
}
] |
2011-05-20
|
[
[
"Titov",
"A. I.",
""
],
[
"Kampfer",
"B.",
""
]
] |
Estimates of differential cross sections and longitudinal asymmetries are presented for the reactions $\bar pp\to \bar \Xi\Xi$ and $\bar pp\to \bar \Xi_c\Xi_c$ at energies $\sqrt{s}\lesssim 15$ GeV. The $\Xi$ and $\Xi_c$ hyperons are assumed to be produced in two-step processes: first, intermediate $\bar\Lambda\Lambda$ and/or $\bar\Lambda_c\Lambda_c$ states are created which are converted afterwards into final states $\bar \Xi\Xi$, $\bar \Xi_c\Xi_c$ and $\bar \Xi_c\Xi_c$. The full amplitudes are described by loop diagrams within a modified Regge model, based on the topological decomposition of planar quark diagrams. A strong sensitivity of the ratio of yields of $\bar \Xi_c\Xi_c$ to $\bar \Xi\Xi$ and of $\bar \Lambda_c\Lambda_c$ to $\bar \Lambda\Lambda$ to the degree of SU(4) symmetry violation is found.
|
hep-th/0102186
|
Zvi Bern
|
Z. Bern (UCLA)
|
Perturbative Quantization of Gravity Theories
|
Talk presented at 5th International Symposium on Radiative
Corrections (RADCOR-2000), Carmel CA, September 11-15, 2000. Latex, 12 pages
| null | null |
UCLA/01/TEP/5
|
hep-th gr-qc hep-ph
| null |
We discuss string theory relations between gravity and gauge theory tree
amplitudes. Together with $D$-dimensional unitarity, these relations can be
used to perturbatively quantize gravity theories, i.e. they contain the
necessary information for calculating complete gravity $S$-matrices to any loop
orders. This leads to a practical method for computing non-trivial gravity
$S$-matrix elements by relating them to much simpler gauge theory ones. We also
describe arguments that N=8 D=4 supergravity is less divergent in the
ultraviolet than previously thought.
|
[
{
"created": "Tue, 27 Feb 2001 00:42:29 GMT",
"version": "v1"
}
] |
2007-05-23
|
[
[
"Bern",
"Z.",
"",
"UCLA"
]
] |
We discuss string theory relations between gravity and gauge theory tree amplitudes. Together with $D$-dimensional unitarity, these relations can be used to perturbatively quantize gravity theories, i.e. they contain the necessary information for calculating complete gravity $S$-matrices to any loop orders. This leads to a practical method for computing non-trivial gravity $S$-matrix elements by relating them to much simpler gauge theory ones. We also describe arguments that N=8 D=4 supergravity is less divergent in the ultraviolet than previously thought.
|
1305.4344
|
Kouzou Nishida
|
Kouzou Nishida
|
Lovelock Gravity with Spontaneous Dimensional Breaking
|
7 pages
| null | null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider D-dimensional Lovelock gravity with only one term of higher-order
Lovelock Lagrangian densities, and show that a product of Minkowski space-time
and n-spheres is its vacuum solution. The most interesting feature of our model
is that the spontaneous compactification of the extra dimensions results in
reproduction of the Einstein gravity with no cosmological constant.
|
[
{
"created": "Sun, 19 May 2013 10:12:58 GMT",
"version": "v1"
}
] |
2013-05-21
|
[
[
"Nishida",
"Kouzou",
""
]
] |
We consider D-dimensional Lovelock gravity with only one term of higher-order Lovelock Lagrangian densities, and show that a product of Minkowski space-time and n-spheres is its vacuum solution. The most interesting feature of our model is that the spontaneous compactification of the extra dimensions results in reproduction of the Einstein gravity with no cosmological constant.
|
1810.04203
|
Siddhartha Karmakar
|
Sujata Pandey, Siddhartha Karmakar, Subhendu Rakshit
|
Interactions of Astrophysical Neutrinos with Dark Matter: A model
building perspective
|
Note added
| null |
10.1007/JHEP01(2019)095
| null |
hep-ph astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the possibility that high energy astrophysical neutrinos can
interact with the dark matter on their way to Earth. Keeping in mind that new
physics might leave its signature at such energies, we have considered all
possible topologies for effective interactions between neutrino and dark
matter. Building models, that give rise to a significant flux suppression of
astrophysical neutrinos at Earth, is rather difficult. We present a
$Z^{\prime}$-mediated model in this context. Encompassing a large variety of
models, a wide range of dark matter masses from $10^{-21}$ eV up to a TeV, this
study aims at highlighting the challenges one encounters in such a model
building endeavour after satisfying various cosmological constraints, collider
search limits and electroweak precision measurements.
|
[
{
"created": "Tue, 9 Oct 2018 18:34:26 GMT",
"version": "v1"
},
{
"created": "Tue, 1 Jan 2019 14:26:16 GMT",
"version": "v2"
},
{
"created": "Wed, 21 Oct 2020 14:32:21 GMT",
"version": "v3"
}
] |
2020-10-22
|
[
[
"Pandey",
"Sujata",
""
],
[
"Karmakar",
"Siddhartha",
""
],
[
"Rakshit",
"Subhendu",
""
]
] |
We explore the possibility that high energy astrophysical neutrinos can interact with the dark matter on their way to Earth. Keeping in mind that new physics might leave its signature at such energies, we have considered all possible topologies for effective interactions between neutrino and dark matter. Building models, that give rise to a significant flux suppression of astrophysical neutrinos at Earth, is rather difficult. We present a $Z^{\prime}$-mediated model in this context. Encompassing a large variety of models, a wide range of dark matter masses from $10^{-21}$ eV up to a TeV, this study aims at highlighting the challenges one encounters in such a model building endeavour after satisfying various cosmological constraints, collider search limits and electroweak precision measurements.
|
0804.3805
|
Ivan Vitev
|
Ivan Vitev, Ben-Wei Zhang
|
A systematic study of direct photon production in heavy ion collisions
|
Final version published in PLB. Added comments, 2 references and
discussion in relation to SDIS observables
|
Phys.Lett.B669:337-344,2008
|
10.1016/j.physletb.2008.10.019
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A theoretical derivation of photon bremsstrahlung, induced by the
interactions of an energetic quark in a hot and dense quark-gluon plasma, is
given in the framework of the reaction operator approach. For the physically
relevant case of hard jet production, followed by few in-medium interactions,
we find that the Landau-Pomeranchuk-Migdal suppression of the bremsstrahlung
photon intensity is much stronger than in the previously discussed limit of
on-shell quarks and a large number of soft scatterings. We present the first
systematic study of direct photon production in minimum bias d+Cu and d+Au and
central Cu+Cu and Au+Au heavy ion collisions at the Relativistic Heavy Ion
Collider at center of mass energies of 62.4 GeV and 200 GeV. We find that the
contribution of the final-state photon production at pT < 5 GeV is limited to
35%, and at high transverse momenta, the modification of the direct photon
cross section is dominated by initial-state cold nuclear matter effects.
|
[
{
"created": "Wed, 23 Apr 2008 20:32:32 GMT",
"version": "v1"
},
{
"created": "Wed, 30 Apr 2008 23:33:47 GMT",
"version": "v2"
},
{
"created": "Mon, 10 Nov 2008 18:07:58 GMT",
"version": "v3"
}
] |
2008-11-26
|
[
[
"Vitev",
"Ivan",
""
],
[
"Zhang",
"Ben-Wei",
""
]
] |
A theoretical derivation of photon bremsstrahlung, induced by the interactions of an energetic quark in a hot and dense quark-gluon plasma, is given in the framework of the reaction operator approach. For the physically relevant case of hard jet production, followed by few in-medium interactions, we find that the Landau-Pomeranchuk-Migdal suppression of the bremsstrahlung photon intensity is much stronger than in the previously discussed limit of on-shell quarks and a large number of soft scatterings. We present the first systematic study of direct photon production in minimum bias d+Cu and d+Au and central Cu+Cu and Au+Au heavy ion collisions at the Relativistic Heavy Ion Collider at center of mass energies of 62.4 GeV and 200 GeV. We find that the contribution of the final-state photon production at pT < 5 GeV is limited to 35%, and at high transverse momenta, the modification of the direct photon cross section is dominated by initial-state cold nuclear matter effects.
|
1605.07470
|
Stefan Groot Nibbelink
|
Stefan Groot Nibbelink and Erik Parr
|
Twisted superspace: Non-renormalization and fermionic symmetries in
certain (heterotic string inspired) non-supersymmetric field theories
|
6 pages LaTeX, 9 figures; typos corrected; to be published version
|
Phys. Rev. D 94, 041704 (2016)
|
10.1103/PhysRevD.94.041704
|
LMU-ASC 21/16
|
hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Inspired by the tachyon-free non-supersymmetric heterotic SO(16)xSO(16)
string we consider a special class of non-supersymmetric field theories: Those
that can be obtained from supersymmetric field theories by supersymmetry
breaking twists. We argue that such theories, like their supersymmetric counter
parts, may still possess some fermionic symmetries as left-overs of the super
gauge transformations and have special one-loop non-renormalization properties
due to holomorphicity. In addition, we extend the supergraph techniques to
these theories to calculate some explicit supersymmetry-breaking corrections.
|
[
{
"created": "Tue, 24 May 2016 14:08:50 GMT",
"version": "v1"
},
{
"created": "Wed, 6 Jul 2016 09:59:00 GMT",
"version": "v2"
}
] |
2016-08-31
|
[
[
"Nibbelink",
"Stefan Groot",
""
],
[
"Parr",
"Erik",
""
]
] |
Inspired by the tachyon-free non-supersymmetric heterotic SO(16)xSO(16) string we consider a special class of non-supersymmetric field theories: Those that can be obtained from supersymmetric field theories by supersymmetry breaking twists. We argue that such theories, like their supersymmetric counter parts, may still possess some fermionic symmetries as left-overs of the super gauge transformations and have special one-loop non-renormalization properties due to holomorphicity. In addition, we extend the supergraph techniques to these theories to calculate some explicit supersymmetry-breaking corrections.
|
1805.10306
|
Victor Alejandro Penas
|
G. Aldazabal, E. Andr\'es, M.Mayo, V. Penas
|
Symmetry enhancement interpolation, non-commutativity and Double Field
Theory
|
We have added several comments along the papers. The introduction has
been improved. Section 4.5 (SU(3) example) expanded and improved. Several
typos corrected. 46 pages, no figures
| null |
10.1007/JHEP03(2019)012
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a moduli dependent target space effective field theory action for
(truncated) heterotic string toroidal compactifications. When moving
continuously along moduli space, the stringy gauge symmetry
enhancement-breaking effects, which occur at particular points of moduli space,
are reproduced. Besides the expected fields, originated in the ten dimensional
low energy effective theory, a new vector and scalar fields are included. These
fields depend on "double periodic coordinates" as usually introduced in Double
Field Theory. Their mode expansion encodes information about string states,
carrying winding and KK momenta, associated to gauge symmetry enhancements.
Interestingly enough, it is found that a non-commutative product, which
introduces an intrinsic non-commutativity on the compact target space, is
required in order to make contact with string theory amplitude results.
|
[
{
"created": "Fri, 25 May 2018 18:12:41 GMT",
"version": "v1"
},
{
"created": "Wed, 13 Mar 2019 20:21:58 GMT",
"version": "v2"
}
] |
2019-03-27
|
[
[
"Aldazabal",
"G.",
""
],
[
"Andrés",
"E.",
""
],
[
"Mayo",
"M.",
""
],
[
"Penas",
"V.",
""
]
] |
We present a moduli dependent target space effective field theory action for (truncated) heterotic string toroidal compactifications. When moving continuously along moduli space, the stringy gauge symmetry enhancement-breaking effects, which occur at particular points of moduli space, are reproduced. Besides the expected fields, originated in the ten dimensional low energy effective theory, a new vector and scalar fields are included. These fields depend on "double periodic coordinates" as usually introduced in Double Field Theory. Their mode expansion encodes information about string states, carrying winding and KK momenta, associated to gauge symmetry enhancements. Interestingly enough, it is found that a non-commutative product, which introduces an intrinsic non-commutativity on the compact target space, is required in order to make contact with string theory amplitude results.
|
hep-ph/0605007
|
Narendra Sahu
|
Narendra Sahu and Utpal Sarkar
|
Leptogenesis bound on neutrino masses in left-right symmetric models
with spontaneous D-parity violation
|
32 pages (revtex), 12 eps figures, clarifications are added in
section VII, A new section VIII is added, useful references are added.
Journal version, To appear in Phys. Rev. D
|
Phys.Rev. D74 (2006) 093002
|
10.1103/PhysRevD.74.093002
| null |
hep-ph
| null |
We study the baryogenesis via leptogenesis in a class of left-right symmetric
models, in which $D$-parity is broken spontaneously. We first discuss the
consequence of the spontaneous $D$-parity breaking on the neutrino masses. Than
we study the lepton asymmetry in various cases, from the decay of right handed
neutrino as well as the triplet Higgs, depending on their relative masses they
acquire from the symmetry breaking pattern. The leptogenesis bound on their
masses are discussed by taking into account the low energy neutrino oscillation
data. It is shown that a TeV scale leptogenesis is viable if there are
additional sources of CP violation like domain wall originating from the
spontaneous $D$-parity violation.
|
[
{
"created": "Sun, 30 Apr 2006 07:58:04 GMT",
"version": "v1"
},
{
"created": "Fri, 12 May 2006 19:51:43 GMT",
"version": "v2"
},
{
"created": "Sun, 22 Oct 2006 14:28:23 GMT",
"version": "v3"
}
] |
2009-11-11
|
[
[
"Sahu",
"Narendra",
""
],
[
"Sarkar",
"Utpal",
""
]
] |
We study the baryogenesis via leptogenesis in a class of left-right symmetric models, in which $D$-parity is broken spontaneously. We first discuss the consequence of the spontaneous $D$-parity breaking on the neutrino masses. Than we study the lepton asymmetry in various cases, from the decay of right handed neutrino as well as the triplet Higgs, depending on their relative masses they acquire from the symmetry breaking pattern. The leptogenesis bound on their masses are discussed by taking into account the low energy neutrino oscillation data. It is shown that a TeV scale leptogenesis is viable if there are additional sources of CP violation like domain wall originating from the spontaneous $D$-parity violation.
|
hep-ph/9609338
|
Eric Braaten
|
Eric Braaten (Ohio State University)
|
Quarkonium Polarization in the NRQCD Factorization Framework
|
11 pages, LaTeX, invited talk presented at the Quarkonium Physics
Workshop, University of Illinois at Chicago, June 1996
|
Int.J.Mod.Phys.A12:3941-3950,1997
|
10.1142/S0217751X97002097
|
OHSTPY-HEP-T-96-025
|
hep-ph
| null |
The NRQCD factorization approach for calculating inclusive production of
heavy quarkonium gives unambiguous predictions for the polarization of
quarkonium states. The factorization formula for polarized states can be
obtained by using the threshold expansion method to calculate the
short-distance coefficients and then using symmetries of NRQD to reduce the
NRQCD matrix elements. A particularly dramatic prediction of the NRQCD
factorization framework is that prompt psi's and psi-primes's produced at the
Tevatron should be predominantly transversely polarized at large transverse
momentum.
|
[
{
"created": "Thu, 12 Sep 1996 20:45:55 GMT",
"version": "v1"
}
] |
2011-04-15
|
[
[
"Braaten",
"Eric",
"",
"Ohio State University"
]
] |
The NRQCD factorization approach for calculating inclusive production of heavy quarkonium gives unambiguous predictions for the polarization of quarkonium states. The factorization formula for polarized states can be obtained by using the threshold expansion method to calculate the short-distance coefficients and then using symmetries of NRQD to reduce the NRQCD matrix elements. A particularly dramatic prediction of the NRQCD factorization framework is that prompt psi's and psi-primes's produced at the Tevatron should be predominantly transversely polarized at large transverse momentum.
|
hep-ph/0410396
|
Burkhard Kampfer
|
B. Kampfer, M. Bluhm
|
Strangeness and charm in QCD matter
|
invited talk at Strangeness in Qaurk Matter 2004, Cape Town, Sep. 15
- 20, 2004
|
J.Phys.G31:S1141-S1146,2005
|
10.1088/0954-3899/31/6/075
| null |
hep-ph
| null |
Strangeness and charm degrees of freedom in strongly interacting matter are
discussed within a quasi-particle model adjusted to lattice QCD data. The model
allows to extrapolate lattice QCD data to large baryo-chemical potential. We
outline the thermal evolution of matter in the early universe at and slightly
after confinement and comment briefly on charm dynamics in relativistic
heavy-ion collisions.
|
[
{
"created": "Fri, 29 Oct 2004 08:54:03 GMT",
"version": "v1"
}
] |
2008-11-26
|
[
[
"Kampfer",
"B.",
""
],
[
"Bluhm",
"M.",
""
]
] |
Strangeness and charm degrees of freedom in strongly interacting matter are discussed within a quasi-particle model adjusted to lattice QCD data. The model allows to extrapolate lattice QCD data to large baryo-chemical potential. We outline the thermal evolution of matter in the early universe at and slightly after confinement and comment briefly on charm dynamics in relativistic heavy-ion collisions.
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