pinecone/core-2020-05-10-deduplication huggingface dataset:
Vector Mesons and an Interpretation of Seiberg Duality

We interpret the dynamics of Supersymmetric QCD (SQCD) in terms of ideas
familiar from the hadronic world. Some mysterious properties of the
supersymmetric theory, such as the emergent magnetic gauge symmetry, are shown
to have analogs in QCD. On the other hand, several phenomenological concepts,
such as "hidden local symmetry" and "vector meson dominance," are shown to be
rigorously realized in SQCD. These considerations suggest a relation between
the flavor symmetry group and the emergent gauge fields in theories with a
weakly coupled dual description.Comment: 23 pages. v2: minor corrections and references adde
D1-brane in Constant R-R 3-form Flux and Nambu Dynamics in String Theory

We consider D1-string in a constant R-R 3-form flux background and analyze
its low energy limit. The leading order low energy theory has reparametrization
symmetry and is a generalization of an earlier work by Takhtajan. We show that
the dynamical evolution of the theory takes a generalized Hamiltonian form in
terms of a Nambu bracket. This description is formulated in terms of
reparametrization invariant quantities and requires no fixing of the
reparametrization symmetry. We also show that a Nambu- Poisson (p + 2)-bracket
arises naturally in the reparametrization invariant description of the low
energy theory of a p-brane in a constant (p + 2)-form flux background. For
example, our results apply for a fundamental string in a constant NS-NS 3-form
flux H3 and an M2-brane in a constant 4-form flux F4.Comment: 30 pages, latex, references adde
Moduli and electromagnetic black brane holography

We investigate the thermodynamic and hydrodynamic properties of 4-dimensional
gauge theories with finite electric charge density in the presence of a
constant magnetic field. Their gravity duals are planar magnetically and
electrically charged AdS black holes in theories that contain a gauge
Chern-Simons term. We present a careful analysis of the near horizon geometry
of these black branes at finite and zero temperature for the case of a scalar
field non-minimally coupled to the electromagnetic field. With the knowledge of
the near horizon data, we obtain analytic expressions for the shear viscosity
coefficient and entropy density, and also study the effect of a generic set of
four derivative interactions on their ratio. We also comment on the attractor
flows of the extremal solutions.Comment: 39 pages, no figures; v2: minor changes, refs. added; v3: typo fixed;
  v4: a proof for decoupling of the viscosity mode added in appendix, matches
  the published versio
Dynamical Cobordisms in General Relativity and String Theory

We describe a class of time-dependent solutions in string- or M-theory that
are exact with respect to alpha-prime and curvature corrections and interpolate
in physical space between regions in which the low energy physics is
well-approximated by different string theories and string compactifications.
The regions are connected by expanding "domain walls" but are not separated by
causal horizons, and physical excitations can propagate between them. As
specific examples we construct solutions that interpolate between oriented and
unoriented string theories, and also between type II and heterotic theories.
Our solutions can be weakly curved and under perturbative control everywhere
and can asymptote to supersymmetric at late times.Comment: 35 pages, 5 figures, LaTeX v2: reference adde
Vacuum stability, string density of states and the Riemann zeta function

We study the distribution of graded degrees of freedom in classically stable
oriented closed string vacua and use the Rankin-Selberg transform to link it to
the finite one-loop vacuum energy. In particular, we find that the spectrum of
physical excitations not only must enjoy asymptotic supersymmetry but actually,
at very large mass, bosonic and fermionic states must follow a universal
oscillating pattern, whose frequencies are related to the zeros of the Riemann
zeta-function. Moreover, the convergence rate of the overall number of the
graded degrees of freedom to the value of the vacuum energy is determined by
the Riemann hypothesis. We discuss also attempts to obtain constraints in the
case of tachyon-free open-string theories.Comment: 1+26 pages, 7 figures. v2 refs adde
Twisting the Mirror TBA

We study finite-size corrections to the magnon dispersion relation in three
models which differ from string theory on AdS5 x S5 in their boundary
conditions. Asymptotically, this is accomplished by twisting the transfer
matrix in a way which manifestly preserves integrability. In model I all
world-sheet fields are periodic, whereas model II represents a particular
orbifold of AdS5 x S5 and model III is a beta-deformed theory. For models I and
II we construct the one-particle TBA equations and use them to determine the
leading finite-size correction to the asymptotic Bethe equation. We also make
some interesting observations concerning the quantization conditions for the
momentum. For the same models we compute the leading and for model II the
next-to-leading order finite-size corrections to the asymptotic magnon
dispersion relation. Furthermore, we apply L\"uscher's formulae to compute the
leading finite-size corrections in beta-deformed theory. In addition to
reproducing known results, we provide new predictions for two-particle states
from the sl(2) sector, to be confronted with explicit field-theoretic
calculations in the dual gauge theory. Finally, we prove that the leading
finite-size correction to the energy of an sl(2) magnon in orbifold theory is
the same as the one for an su(2) magnon in beta-deformed theory for special
values of beta. We also speculate that for these values of beta our result for
the next-to-leading order correction in the orbifold model might coincide with
the corresponding correction to the energy of su(2) magnon in beta-deformed
theory.Comment: 58 pages, 8 figures, 4 tables, v3; as published in JHEP, with a minor
  correction regarding the supersymmetry of model I
Twisted Bethe equations from a twisted S-matrix

All-loop asymptotic Bethe equations for a 3-parameter deformation of
AdS5/CFT4 have been proposed by Beisert and Roiban. We propose a Drinfeld twist
of the AdS5/CFT4 S-matrix, together with c-number diagonal twists of the
boundary conditions, from which we derive these Bethe equations. Although the
undeformed S-matrix factorizes into a product of two su(2|2) factors, the
deformed S-matrix cannot be so factored. Diagonalization of the corresponding
transfer matrix requires a generalization of the conventional algebraic Bethe
ansatz approach, which we first illustrate for the simpler case of the twisted
su(2) principal chiral model. We also demonstrate that the same twisted Bethe
equations can alternatively be derived using instead untwisted S-matrices and
boundary conditions with operatorial twists.Comment: 42 pages; v2: a new appendix on sl(2) grading, 2 additional
  references, and some minor changes; v3: improved Appendix D, additional
  references, and further minor changes, to appear in JHE
Closed flux tubes and their string description in D=3+1 SU(N) gauge
  theories

We calculate the energy spectrum of a confining flux tube that is closed
around a spatial torus, as a function of its length l. We do so for various
SU(N) gauge theories in 3+1 dimensions, and for various values of spin, parity
and longitudinal momentum. We are able to present usefully accurate results for
about 20 of the lightest such states, for a range of l that begins close to the
(finite volume) deconfining phase transition, and extends up to l.sqrt(K)~6
(where K is the string tension). We find that most of these low-lying states
are well described by the spectrum of the Nambu-Goto free string theory in flat
space-time. Remarkably, this is so not only at the larger values of l, where
the gap between the ground state energy and the low-lying excitations becomes
small compared to the mass gap, but also down to much shorter lengths where
these excitation energies become large compared to sqrt(K), the flux-tube no
longer `looks' anything like a thin string, and an expansion of the effective
string action in powers of 1/l no longer converges. All this is for flux in the
fundamental representation. We also calculate the k=2 (anti)symmetric ground
states and these show larger corrections at small l. So far all this closely
resembles our earlier findings in 2+1 dimensions. However, and in contrast to
the situation in D=2+1, we also find that there are some states, with J,P=0,-
quantum numbers, that show large deviations from the Nambu-Goto spectrum. We
investigate the possibility that (some of) these states may encode the massive
modes associated with the internal structure of the flux tube, and we discuss
how the precocious free string behaviour of most states constrains the
effective string action, on which much interesting theoretical progress has
recently been made.Comment: 65 pages, 22 figures; more on massive modes, minor corrections,
  recent references adde
3D gauged supergravity from wrapped M5-branes with AdS/CMT applications

International audienceBy identifying a bosonic consistent truncation from the 1/4-BPS wrapped M5-brane geometry of Maldacena, Strominger and Witten in D=11 supergravity and finding a supersymmetric extension, we recover an N=2, D=3 supergravity theory. Reductions of a large class of supersymmetric solutions corresponding to wrapped M2 and M5-branes lead to black strings and warped AdS_3 solutions preserving supersymmetry. With a view to AdS/CMT applications, we also construct a numerical hairy BTZ black hole and, as a preliminary step in this direction, determine the conductivity of the dual CFT
A fourth generation, anomalous like-sign dimuon charge asymmetry and the
  LHC

A fourth chiral generation, with $m_{t^\prime}$ in the range $\sim (300 -
500)$ GeV and a moderate value of the CP-violating phase can explain the
anomalous like-sign dimuon charge asymmetry observed recently by the D0
collaboration. The required parameters are found to be consistent with
constraints from other $B$ and $K$ decays. The presence of such quarks, apart
from being detectable in the early stages of the LHC, would also have important
consequences in the electroweak symmetry breaking sector.Comment: 18 pages, 9 figures, Figure 1 is modified, more discussions are added
  in section 2. new references adde
Solving the A{FB}^b anomaly in natural composite models

The Standard Model with a light Higgs provides a very accurate description of
the electroweak precision observables. The largest deviation between the
Standard Model predictions and the experimental measurements, the
forward-backward asymmetry of the bottom quark A{FB}^b, can be interpreted as
an indication of new physics at the TeV scale. The strong agreement between
theory and experiment in the branching fraction of the Z into b-quarks puts
strong constraints for new physics aiming to solve the A{FB}^b puzzle. We study
a class of natural composite Higgs models that can solve the A{FB}^b anomaly
reproducing the observed Rb as well as the top and bottom masses. We find that
the subgroup of the custodial symmetry able to protect Zb_L anti-b_L from large
corrections generated by the top sector play an important role if we want to
maintain naturalness in the composite sector. We make a thorough study of the
composite operators mixing with the b-quark, determine their embedding under
the global composite symmetry and the parameter space that lead to the correct
Zb anti-b couplings while keeping the top and bottom masses to their physical
values. We study the predictions for the spectrum of light fermionic resonances
and the corrections to Zt anti-t couplings in this scenario.Comment: 26 pages, 6 figures, version published in JHEP, short discussion on
  radiative corrections and LHC phenomenology added, references added, results
  and conclusions unchange
Decaying Dark Matter in the Supersymmetric Standard Model with Freeze-in
  and Seesaw mechanims

Inspired by the decaying dark matter (DM) which can explain cosmic ray
anomalies naturally, we consider the supersymmetric Standard Model with three
right-handed neutrinos (RHNs) and R-parity, and introduce a TeV-scale DM sector
with two fields \phi_{1,2} and a $Z_3$ discrete symmetry. The DM sector only
interacts with the RHNs via a very heavy field exchange and then we can explain
the cosmic ray anomalies. With the second right-handed neutrino N_2 dominant
seesaw mechanism at the low scale around 10^4 GeV, we show that \phi_{1,2} can
obtain the vacuum expectation values around the TeV scale, and then the
lightest state from \phi_{1,2} is the decay DM with lifetime around \sim
10^{26}s. In particular, the DM very long lifetime is related to the tiny
neutrino masses, and the dominant DM decay channels to \mu and \tau are related
to the approximate \mu-\tau symmetry. Furthermore, the correct DM relic density
can be obtained via the freeze-in mechanism, the small-scale problem for power
spectrum can be solved due to the decays of the R-parity odd meta-stable states
in the DM sector, and the baryon asymmetry can be generated via the soft
leptogensis.Comment: 24 pages,3 figure
Dynamical R-parity Breaking at the LHC

In a class of extensions of the minimal supersymmetric standard model with
(B-L)/left-right symmetry that explains the neutrino masses, breaking R-parity
symmetry is an essential and dynamical requirement for successful gauge
symmetry breaking. Two consequences of these models are: (i) a new kind of
R-parity breaking interaction that protects proton stability but adds new
contributions to neutrinoless double beta decay and (ii) an upper bound on the
extra gauge and parity symmetry breaking scale which is within the large hadron
collider (LHC) energy range. We point out that an important prediction of such
theories is a potentially large mixing between the right-handed charged lepton
($e^c$) and the superpartner of the right-handed gauge boson ($\widetilde
W_R^+$), which leads to a brand new class of R-parity violating interactions of
type $\widetilde{\mu^c}^\dagger\nu_\mu^c e^c$ and $\widetilde{d^c}^\dagger\u^c
e^c$. We analyze the relevant constraints on the sparticle mass spectrum and
the LHC signatures for the case with smuon/stau NLSP and gravitino LSP. We note
the "smoking gun" signals for such models to be lepton flavor/number violating
processes: $pp\to \mu^\pm\mu^\pm e^+e^-jj$ (or $\tau^\pm\tau^\pm e^+e^-jj$) and
$pp\to\mu^\pm e^\pm b \bar{b} jj$ (or $\tau^\pm e^\pm b \bar{b} jj$) without
significant missing energy. The predicted multi-lepton final states and the
flavor structure make the model be distinguishable even in the early running of
the LHC.Comment: 30 pages, 13 figures, 6 tables, reference adde
Cartan-Weyl 3-algebras and the BLG Theory II: Strong-Semisimplicity and
  Generalized Cartan-Weyl 3-algebras

One of the most important questions in the Bagger-Lambert-Gustavsson (BLG)
theory of multiple M2-branes is the choice of the Lie 3-algebra. The Lie
3-algebra should be chosen such that the corresponding BLG model is unitary and
admits fuzzy 3-sphere as a solution. In this paper we propose another new
condition: the Lie 3-algebras of use must be connected to the semisimple Lie
algebras describing the gauge symmetry of D-branes via a certain reduction
condition. We show that this reduction condition leads to a natural
generalization of the Cartan-Weyl 3-algebras introduced in arXiv:1004.1397.
Similar to a Cartan-Weyl 3-algebra, a generalized Cartan-Weyl 3-algebra
processes a set of step generators characterized by non-degenerate roots.
However, its Cartan subalgebra is non-abelian in general. We give reasons why
having a non-abelian Cartan subalgebra may be just right to allow for fuzzy
3-sphere solution in the corresponding BLG models. We propose that generalized
Cartan-Weyl 3-algebras is the right class of metric Lie 3-algebras to be used
in the BLG theory.Comment: 28 pages. LaTeX. v2. typos correcte
Black-hole dynamics in BHT massive gravity

Using an exact Vaidya-type null-dust solution, we study the area and entropy
laws for dynamical black holes defined by a future outer trapping horizon in
(2+1)-dimensional Bergshoeff-Hohm-Townsend (BHT) massive gravity. We consider
the theory admitting a degenerate (anti-)de Sitter vacuum and pure BHT gravity.
It is shown that, while the area of a black hole decreases by the injection of
a null dust with positive energy density in several cases, the Wald-Kodama
dynamical entropy always increases.Comment: 7 pages, 1 figur
Probing boundary-corrections to Nambu-Goto open string energy levels in
  3d SU(2) gauge theory

We measure the energy levels of the excitations of the flux tube between
static quark and antiquark in three-dimensional SU(2) gauge theory. Combining
exponential error reduction techniques and a variational method we are able to
reduce the errors for the excited states significantly and to extract excited
states in distinct parity and charge conjugation channels. It is conjectured
that the infrared behavior (at large q\bar{q} separation R) of the flux tube is
governed by an effective string theory. Indeed previous simulations show good
agreement between lattice data and predictions from Nambu-Goto string theory.
Recently, new results on the effective string theory obtained corrections to
the Nambu-Goto predictions and showed that for the open string in three
dimensions first corrections should appears at order 1/R^4. They correspond to
boundary terms in the worldsheet field theory. These corrections are presumably
small for the ground state, but significantly larger for the excited states and
lift the degeneracies of the free theory. Assuming this functional form of the
correction, we obtain for the coefficient b_2=-0.5(2)(2).Comment: 20 pages, 7 figures; v2: Style changed to JHEP. Typos corrected and
  minor changes in the conclusions and the final results. Revised version to
  match published versio
Conformal field theories in anti-de Sitter space

In this paper we discuss the dynamics of conformal field theories on anti-de
Sitter space, focussing on the special case of the N=4 supersymmetric
Yang-Mills theory on AdS_4. We argue that the choice of boundary conditions, in
particular for the gauge field, has a large effect on the dynamics. For
example, for weak coupling, one of two natural choices of boundary conditions
for the gauge field leads to a large N deconfinement phase transition as a
function of the temperature, while the other does not. For boundary conditions
that preserve supersymmetry, the strong coupling dynamics can be analyzed using
S-duality (relevant for g_{YM} >> 1), utilizing results of Gaiotto and Witten,
as well as by using the AdS/CFT correspondence (relevant for large N and large
't Hooft coupling). We argue that some very specific choices of boundary
conditions lead to a simple dual gravitational description for this theory,
while for most choices the gravitational dual is not known. In the cases where
the gravitational dual is known, we discuss the phase structure at large 't
Hooft coupling.Comment: 57 pages, 1 figure. v2: fixed typo
Minimal Flavour Violation with hierarchical squark masses

In a supersymmetric model with hierarchical squark masses we analyze a
pattern of flavour symmetry breaking centered on the special role of the top
Yukawa coupling and, by extension, of the full Yukawa couplings for the up-type
quarks. For sufficiently heavy squarks of the first and second generation this
leads to effective Minimal Flavour Violation of the Flavour Changing Neutral
Current amplitudes. For this to happen we determine the bounds on the masses of
the heavy squarks with QCD corrections taken into account, properly including
previously neglected effects. We believe that the view presented in this paper
altogether strengthens the case for hierarchical sfermions.Comment: 13 pages, 1 figure. v2: an equation correcte
Two and three-point correlators of operators dual to folded string
  solutions at strong coupling

A particular analytic continuation of classical string solutions having a
single AdS_5 spin is considered. These solutions describe strings tunnelling
from the boundary to the boundary of AdS_5. We use the Legendre transform of
the dimensionally regularised action of these solutions to evaluate the 2-point
functions of the dual operators, holographically. Subsequently, we evaluate the
structure coefficient of correlators involving two operators with spin S and a
BPS state, at strong coupling. Our expressions are valid for any value of the
AdS spin S/\sqrt{\lambda} and can be applied both at the case of long and short
strings. For long strings and at leading order, the structure coefficient is
independent of the spin S for twist J operators, while it scales as
1/\log^l{\frac{S}{\sqrt{\lambda}}} for the case of operators with two equal
angular momenta in S^5. For short strings, the structure coefficient is
proportional to the energy E of the string. Finally, we comment on the
possibility of relating the strong coupling 3-point function coefficient of
three large spin twist 2 operators to the action of the 6-gluon scattering
amplitude.Comment: 22 pages 3 figures,typos corrected,references adde
Sparticle Spectrum of Large Volume Compactification

We examine the large volume compactification of Type IIB string theory or its
F theory limit and the associated supersymmetry breakdown and soft terms. It is
crucial to incorporate the loop-induced moduli mixing, originating from
radiative corrections to the Kahler potential. We show that in the presence of
moduli mixing, soft scalar masses generically receive a D-term contribution of
the order of the gravitino mass m_{3/2} when the visible sector cycle is
stabilized by the D-term potential of an anomalous U(1) gauge symmetry, while
the moduli-mediated gaugino masses and A-parameters tend to be of the order of
m_{3/2}/8pi^2. It is noticed also that a too large moduli mixing can
destabilize the large volume solution by making it a saddle point.Comment: 29 page
Hermitian Yang-Mills instantons on resolutions of Calabi-Yau cones

We study the construction of Hermitian Yang-Mills instantons over resolutions
of Calabi-Yau cones of arbitrary dimension. In particular, in d complex
dimensions, we present an infinite family, parametrised by an integer k and a
continuous modulus, of SU(d) instantons. A detailed study of their properties,
including the computation of the instanton numbers is provided. We also explain
how they can be used in the construction of heterotic non-Kahler
compactifications.Comment: 20 pages, 1 figure; typos corrected, section 3.1 expande
Holography for Schrodinger backgrounds

We discuss holography for Schrodinger solutions of both topologically massive
gravity in three dimensions and massive vector theories in (d+1) dimensions. In
both cases the dual field theory can be viewed as a d-dimensional conformal
field theory (two dimensional in the case of TMG) deformed by certain operators
that respect the Schrodinger symmetry. These operators are irrelevant from the
viewpoint of the relativistic conformal group but they are exactly marginal
with respect to the non-relativistic conformal group. The spectrum of linear
fluctuations around the background solutions corresponds to operators that are
labeled by their scaling dimension and the lightcone momentum k_v. We set up
the holographic dictionary and compute 2-point functions of these operators
both holographically and in field theory using conformal perturbation theory
and find agreement. The counterterms needed for holographic renormalization are
non-local in the v lightcone direction.Comment: 73 pages; v2: references added and minor improvement