pinecone/core-2020-05-10-deduplication huggingface dataset:
Fermion Masses in Emergent Electroweak Symmetry Breaking

We consider the generation of fermion masses in an emergent model of
electroweak symmetry breaking with composite $W,Z$ gauge bosons. A universal
bulk fermion profile in a warped extra dimension is used for all fermion
flavors. Electroweak symmetry is broken at the UV (or Planck) scale where
boundary mass terms are added to generate the fermion flavor structure. This
leads to flavor-dependent nonuniversality in the gauge couplings. The effects
are suppressed for the light fermion generations but are enhanced for the top
quark where the $Zt{\bar t}$ and $Wt{\bar b}$ couplings can deviate at the
$10-20%$ level in the minimal setup. By the AdS/CFT correspondence our model
implies that electroweak symmetry is not a fundamental gauge symmetry. Instead
the Standard Model with massive fermions and $W,Z$ gauge bosons is an effective
chiral Lagrangian for some underlying confining strong dynamics at the TeV
scale, where mass is generated without a Higgs mechanism.Comment: modified discussion in Sec 3.1, version published in JHE
Yangian symmetry of the Y=0 maximal giant graviton

We study the remnants of Yangian symmetry of AdS/CFT magnons reflecting from
boundaries with no degrees of freedom. We present the generalized twisted
boundary Yangian of open strings ending on boundaries which preserve only a
subalgebra h of the bulk algebra g, where (g,h) is a symmetric pair. This is
realized by open strings ending on the D3 brane known as the Y=0 maximal giant
graviton in AdS_5 x S^5. We also consider the Yangian symmetry of the boundary
which preserves an su(1|2) subalgebra only.Comment: 17 pages, v2: minor correction made, accepted for publication in JHE
Intermediate distance correlators in hot Yang-Mills theory

Lattice measurements of spatial correlation functions of the operators FF and
FF-dual in thermal SU(3) gauge theory have revealed a clear difference between
the two channels at "intermediate" distances, x ~ 1/(pi T). This is at odds
with the AdS/CFT limit which predicts the results to coincide. On the other
hand, an OPE analysis at short distances (x << 1/(pi T)) as well as effective
theory methods at long distances (x >> 1/(pi T)) suggest differences. Here we
study the situation at intermediate distances by determining the time-averaged
spatial correlators through a 2-loop computation. We do find unequal results,
however the numerical disparity is small. Apart from theoretical issues, a
future comparison of our results with time-averaged lattice measurements might
also be of phenomenological interest in that understanding the convergence of
the weak-coupling series at intermediate distances may bear on studies of the
thermal broadening of heavy quarkonium resonances.Comment: 31 page
AGT on the S-duality Wall

Three-dimensional gauge theory T[G] arises on a domain wall between
four-dimensional N=4 SYM theories with the gauge groups G and its S-dual G^L.
We argue that the N=2^* mass deformation of the bulk theory induces a
mass-deformation of the theory T[G] on the wall. The partition functions of the
theory T[SU(2)] and its mass-deformation on the three-sphere are shown to
coincide with the transformation coefficient of Liouville one-point conformal
block on torus under the S-duality.Comment: 14 pages, 3 figures. v2: Revised the analysis in sections 3.3 and 4.
  Notes and references added. Version to appear in JHE
N=2 supergravity and supercurrents

We address the problem of classifying all N=2 supercurrent multiplets in four
space-time dimensions. For this purpose we consider the minimal formulation of
N=2 Poincare supergravity with a tensor compensator, and derive its linearized
action in terms of three N=2 off-shell multiplets: an unconstrained scalar
superfield, a vector multiplet, and a tensor multiplet. Such an action was
ruled out to exist in the past. Using the action constructed, one can derive
other models for linearized N=2 supergravity by applying N=2 superfield duality
transformations. The action depends parametrically on a constant non-vanishing
real isotriplet g^{ij}=g^{ji} which originates as an expectation value of the
tensor compensator. Upon reduction to N=1 superfields, we show that the model
describes two dually equivalent formulations for the massless multiplet
(1,3/2)+(3/2,2) depending on a choice of g^{ij}. In the case g^{11}=g^{22}=0,
the action describes (i) new minimal N=1 supergravity; and (ii) the
Fradkin-Vasiliev-de Wit-van Holten gravitino multiplet. In the case g^{12}=0,
on the other hand, the action describes (i) old minimal N=1 supergravity; and
(ii) the Ogievetsky-Sokatchev gravitino multiplet.Comment: 40 pages; v2: added references, some comments, new appendi
Charged and rotating Black AdS Branes in $n+p+2$ dimensions

We generalize the vacuum static black brane solutions of Einstein's equations
with negative cosmological constant recently discussed in literature, by
introducing rotations and an electromagnetic field. We investigate numerically
the thermodynamical properties of the charged and of the rotating $AdS$ black
brane and we provide evidences for the existence of the charged and rotating
case. In particular, we study the influence of the rotation and charge on the
tension and mass. We find that the rotation essentially influences the tensions
while the charge essentially influences the mass.Comment: 18 pages, 10 figure
Scattering amplitudes at strong coupling for 4K gluons

In this paper we study the scattering amplitudes at strong coupling for the
case where the number of gluons is a multiple of four. This is an important
missing piece in arXiv:1002.2459. The tricky point for n=4K is that there is
some accidental degeneracy in such case. We explain this point in detail and
show that a non-trivial monodromy around infinity was developed by the
world-sheet coordinate transformation appearing in the computation. It turns
out that besides solving the Y system, we also need to calculate T functions to
compute the full amplitudes. We show that the T functions can be derived by
taking a limit of Y functions of a higher-point case. As a check, we obtain the
known result of eight-point in AdS_3 case.Comment: 23 pages, 3 figures. v3: A major revision of the paper, various
  points much clarified, appendix added; no change of the main result
Standard Model Vacua for Two-dimensional Compactifications

We examine the structure of lower-dimensional standard model vacua for
two-dimensional compactifications (on a 2D torus and on a 2D sphere). In the
case of the torus we find a new standard model vacuum for a large range of
neutrino masses consistent with experiment. Quantum effects play a crucial role
in the existence of this vacuum. For the compactification on a sphere the
classical terms dominate the effective potential for large radii and a stable
vacuum is achieved only by introducing a large magnetic flux. We argue that
there are no two-dimensional standard model vacua for compactifications on a
surface of genus greater than one.Comment: 7 pages, 2 figures; v2: published in JHE
T-duality and closed string non-commutative (doubled) geometry

We provide some evidence that closed string coordinates will become
non-commutative turning on H-field flux background in closed string
compactifications. This is in analogy to open string non-commutativity on the
world volume of D-branes with B- and F-field background. The class of
3-dimensional backgrounds we are studying are twisted tori (fibrations of a
2-torus over a circle) and the their T-dual H-field, 3-form flux backgrounds
(T-folds). The spatial non-commutativity arises due to the non-trivial
monodromies of the toroidal Kahler resp. complex structure moduli fields, when
going around the closed string along the circle direction. In addition we study
closed string non-commutativity in the context of doubled geometry, where we
argue that in general a non-commutative closed string background is T-dual to a
commutative closed string background and vice versa. Finally, in analogy to
open string boundary conditions, we also argue that closed string momentum and
winding modes define in some sense D-branes in closed string doubled geometry.Comment: 31 pages, references added, extended version contains new sections
  3.3., 3.4 and
Colored Resonant Signals at the LHC: Largest Rate and Simplest Topology

We study the colored resonance production at the LHC in a most general
approach. We classify the possible colored resonances based on group theory
decomposition, and construct their effective interactions with light partons.
The production cross section from annihilation of valence quarks or gluons may
be on the order of 400 - 1000 pb at LHC energies for a mass of 1 TeV with
nominal couplings, leading to the largest production rates for new physics at
the TeV scale, and simplest event topology with dijet final states. We apply
the new dijet data from the LHC experiments to put bounds on various possible
colored resonant states. The current bounds range from 0.9 to 2.7 TeV. The
formulation is readily applicable for future searches including other decay
modes.Comment: 29 pages, 9 figures. References updated and additional K-factors
  include
Holographic Non-Abelian Charged Hydrodynamics from the Dynamics of Null
  Horizons

We analyze the dynamics of a four-dimensional null hypersurface in a
five-dimensional bulk spacetime with Einstein-Yang-Mills fields. In an
appropriate ansatz, the projection of the field equations onto the hypersurface
takes the form of conservation laws for relativistic hydrodynamics with global
non-abelian charges. A Chern-Simons term in the bulk action corresponds to
anomalies in the global charges, with a vorticity term arising in the
hydrodynamics. We derive the entropy current and obtain unique expressions for
some of the leading-order transport coefficients (in the abelian case, all of
them) for arbitrary equations of state. As a special case and a concrete
example, we discuss the event horizon of a boosted Einstein-Yang-Mills black
brane in an asymptotically Anti-de-Sitter spacetime. The evolution equations in
that case describe the hydrodynamic limit of a conformal field theory with
anomalous global non-abelian charges on the Anti-de-Sitter boundary.Comment: 46 pages, 1 appendix; v2: fixed typo
A Note on Dual MHV Diagrams in N=4 SYM

Recently a reformulation of the MHV diagram method in N=4 supersymmetric
Yang-Mills theory in momentum twistor space was presented and was shown to be
equivalent to the perturbative expansion of the expectation value of a
supersymmetric Wilson loop in momentum twistor space. In this note we present
related explicit Feynman rules in dual momentum space, which should have the
interpretation of Wilson loop diagrams in dual momentum space. We show that
these novel rules are completely equivalent to ordinary spacetime MHV rules and
can be naturally viewed as their graph dual representation.Comment: 16 pages, 11 figure
Langevin diffusion of heavy quarks in non-conformal holographic
  backgrounds

The Langevin diffusion process of a relativistic heavy quark in a
non-conformal holographic setup is discussed. The bulk geometry is a general,
five-dimensional asymptotically AdS black hole. The heavy quark is described by
a trailing string attached to a flavor brane, moving at constant velocity. From
the equations describing linearized fluctuations of the string world-sheet, the
correlation functions defining a generalized Langevin process are constructed
via the AdS/CFT prescription. In the local limit, analytic expressions for the
Langevin diffusion and friction coefficients are obtained in terms of the bulk
string metric. Modified Einstein relations between these quantities are also
derived. The spectral densities associated to the Langevin correlators are
analyzed, and simple analytic expressions are obtained in the small and large
frequency limits. Finally, a numerical analysis of the jet-quenching parameter,
and a comparison to RHIC phenomenology are performed in the case of Improved
Holographic QCD.Comment: 73 pages, 13 figures. Version accepted for publication in JHEP.
  Various comments and references added, one appendix and 3 figures added,
  section 4.4 shortened, one appendix removed. v3: journal version. Some
  comments added, figure 9 rectifie
Conformal Toda theory with a boundary

We investigate sl(n) conformal Toda theory with maximally symmetric
boundaries. There are two types of maximally symmetric boundary conditions, due
to the existence of an order two automorphism of the W(n>2) algebra. In one of
the two cases, we find that there exist D-branes of all possible dimensions 0
=< d =< n-1, which correspond to partly degenerate representations of the W(n)
algebra. We perform classical and conformal bootstrap analyses of such
D-branes, and relate these two approaches by using the semi-classical light
asymptotic limit. In particular we determine the bulk one-point functions. We
observe remarkably severe divergences in the annulus partition functions, and
attribute their origin to the existence of infinite multiplicities in the
fusion of representations of the W(n>2) algebra. We also comment on the issue
of the existence of a boundary action, using the calculus of constrained
functional forms, and derive the generating function of the B"acklund
transformation for sl(3) Toda classical mechanics, using the minisuperspace
limit of the bulk one-point function.Comment: 42 pages; version 4: added clarifications in section 2.2 and
  footnotes 1 and
Maxwell-Chern-Simons Vortices and Holographic Superconductors

We investigate probe limit vortex solutions of a charged scalar field in
Einstein-Maxwell theory in 3+1 dimensions, for an asymptotically AdS
Schwarzschild black hole metric with the addition of an axionic coupling to the
Maxwell field. We show that the inclusion of such a term, together with a
suitable potential for the axion field, can induce an effective Chern-Simons
term on the 2+1 dimensional boundary. We obtain numerical solutions of the
equations of motion and find Maxwell-Chern-Simons like magnetic vortex
configurations, where the magnetic field profile varies with the size of the
effective Chern-Simons coupling. The axion field has a non-trivial profile
inside the AdS bulk but does not condense at spatial infinity.Comment: 17 pages, 5 figures, version accepted for publication in JHE
A slice of AdS_5 as the large N limit of Seiberg duality

A slice of AdS_5 is used to provide a 5D gravitational description of 4D
strongly-coupled Seiberg dual gauge theories. An (electric) SU(N) gauge theory
in the conformal window at large N is described by the 5D bulk, while its
weakly coupled (magnetic) dual is confined to the IR brane. This framework can
be used to construct an N = 1 MSSM on the IR brane, reminiscent of the original
Randall-Sundrum model. In addition, we use our framework to study
strongly-coupled scenarios of supersymmetry breaking mediated by gauge forces.
This leads to a unified scenario that connects the extra-ordinary gauge
mediation limit to the gaugino mediation limit in warped space.Comment: 47 Pages, axodraw4j.st
From correlation functions to scattering amplitudes

We study the correlators of half-BPS protected operators in N=4
super-Yang-Mills theory, in the limit where the positions of the adjacent
operators become light-like separated. We compute the loop corrections by means
of Lagrangian insertions. The divergences resulting from the light-cone limit
are regularized by changing the dimension of the integration measure over the
insertion points. Switching from coordinates to dual momenta, we show that the
logarithm of the correlator is identical with twice the logarithm of the
matching MHV gluon scattering amplitude. We present a number of examples of
this new relation, at one and two loops.Comment: typos corrected, references adde
The giant graviton on AdS4xCP3 - another step towards the emergence of geometry

We construct the giant graviton on AdS4xCP3 out of a four-brane embedded in and moving on the complex projective space. This configuration is dual to the totally anti-symmetric Schur polynomial operator chiR(A1B1) in the 2+1-dimensional, N=6 super Chern-Simons ABJM theory. We demonstrate that this BPS solution of the D4-brane action is energetically degenerate with the point graviton solution and initiate a study of its spectrum of small fluctuations. Although the full computation of this spectrum proves to be analytically intractable, by perturbing around a 'small' giant graviton, we find good evidence for a dependence of the spectrum on the size, alpha0, of the giant. This is a direct result of the changing shape of the worldvolume as it grows in size
Finite dimensional vertex

The spectrum of linearized excitations of the Type IIB SUGRA on AdS5xS5
contains both unitary and non-unitary representations. Among the non-unitary,
some are finite-dimensional. We explicitly construct the pure spinor vertex
operators for a family of such finite-dimensional representations. The
construction can also be applied to infinite-dimensional representations,
including unitary, although it becomes in this case somewhat less explicit.Comment: LaTeX 48pp; v2: added explanations, small corrections, referenc
On the leading OPE corrections to the ghost-gluon vertex and the Taylor theorem

This brief note is devoted to a study of genuine non-perturbative corrections to the Landau gauge ghost-gluon vertex in terms of the non-vanishing dimension-two gluon condensate. We prove these corrections to give account of current SU(2) lattice data for the vertex with different kinematical configurations in the domain of intermediate momenta, roughly above 2-3 GeV. We pay special attention to the kinematical limit which the bare vertex takes for its tree-level expression at any perturbative order, according to the well-known Taylor theorem. Based on our OPE analysis, we also present a simple model for the vertex, in acceptable agreement with the lattice data also in the IR domain
Stau Kinks at the LHC

The kink signature of charged tracks is predicted in some SUSY models, and it
is very characteristic signal at collider experiments. We study the kink
signature at LHC using two models, SUSY models with a gravitino LSP and a stau
NLSP, and R-parity violating SUSY models with a stau (N)LSP. We find that a
large number of kink events can be discovered in a wide range of the SUSY
parameters, when the decay length is O(10-10^5)mm. Model discrimination by
identifying the daughter particles of the kink tracks is also discussed.Comment: 19 pages, 4 figures; Version published in JHEP; abstract refined,
  reference added and several minor corrections in tex
N=1 Sigma Models in AdS_4

We study sigma models in AdS_4 with global N=1 supersymmetry and find that
they differ significantly from their flat-space cousins -- the target space is
constrained to be a Kahler manifold with an exact Kahler form, the
superpotential transforms under Kahler transformations, the space of
supersymmetric vacua is generically a set of isolated points even when the
superpotential vanishes, and the R-symmetry is classically broken by the
cosmological constant. Remarkably, the exactness of the Kahler class is also
required for the sigma model to arise as a decoupling limit of N=1
supergravity, and ensures the vanishing of gravitational anomalies. As simple
applications of these results, we argue that fields with AdS_4 scale masses are
ubiquitous in, for example, type IIB N=1 AdS_4 vacua stabilized near large
volume; we also show that the Affleck-Dine-Seiberg runaway of N_f < N_c SQCD is
regulated by considering the theory in AdS_4.Comment: 32 pages; v2: minor changes and references added; v3: discussion in
  sect. 5 extended, version published in JHE
Antenna subtraction at NNLO with hadronic initial states: real-virtual initial-initial configurations

The antenna subtraction method handles real radiation contributions in higher order corrections to jet observables. The method is based on antenna functions, which encapsulate all unresolved radiation between a pair of hard radiator partons. To apply this method to compute hadron collider observables, initial-initial antenna functions with both radiators in the initial state are required. In view of extending the antenna subtraction method to next-to-next-to-leading order (NNLO) calculations at hadron colliders, we derive the one-loop initial-initial antenna functions in unintegrated and integrated form
Semiclassical strings in marginally deformed toric AdS/CFT

We study string solutions in the beta-deformed Sasaki-Einstein gauge/gravity
dualities. We find that the BPS point-like strings move in the submanifolds
where the two U(1) circles shrink to zero size. In the corresponding T^3
fibration description, the strings live on the edges of the polyhedron, where
the T^3 fibration degenerates to T^1. Moreover, we find that for each deformed
Sasaki-Einstein manifold the BPS string solutions exist only for particular
values of the deformation parameter. Our results imply that in the dual field
theory the corresponding BPS operators exist only for these particular values
of the deformation parameter we find. We also examine the non-BPS strings,
derive their dispersion relations and compare them with the undeformed ones.
Finally, we comment on the range of the validity of our solutions and their
dependence on the deformation parameter.Comment: 29 pages, 9 figure
From Necklace Quivers to the F-theorem, Operator Counting, and T(U(N))

The matrix model of Kapustin, Willett, and Yaakov is a powerful tool for
exploring the properties of strongly interacting superconformal Chern-Simons
theories in 2+1 dimensions. In this paper, we use this matrix model to study
necklace quiver gauge theories with {\cal N}=3 supersymmetry and U(N)^d gauge
groups in the limit of large N. In its simplest application, the matrix model
computes the free energy of the gauge theory on S^3. The conjectured F-theorem
states that this quantity should decrease under renormalization group flow. We
show that for a simple class of such flows, the F-theorem holds for our
necklace theories. We also provide a relationship between matrix model
eigenvalue distributions and numbers of chiral operators that we conjecture
holds more generally. Through the AdS/CFT correspondence, there is therefore a
natural dual geometric interpretation of the matrix model saddle point in terms
of volumes of 7-d tri-Sasaki Einstein spaces and some of their 5-d
submanifolds. As a final bonus, our analysis gives us the partition function of
the T(U(N)) theory on S^3.Comment: 3 figures, 41 pages; v2 minor improvements, refs adde
Massive amplitudes on the Coulomb branch of N=4 SYM

We initiate a systematic study of amplitudes with massive external particles
on the Coulomb-branch of N=4 super Yang Mills theory: 1) We propose that
(multi-)soft-scalar limits of massless amplitudes at the origin of moduli space
can be used to determine Coulomb-branch amplitudes to leading order in the
mass. This is demonstrated in numerous examples. 2) We find compact explicit
expressions for several towers of tree-level amplitudes, including scattering
of two massive W-bosons with any number of positive helicity gluons, valid for
all values of the mass. 3) We present the general structure of superamplitudes
on the Coulomb branch. For example, the n-point "MHV-band" superamplitude is
proportional to a Grassmann polynomial of mixed degree 4 to 12, which is
uniquely determined by supersymmetry. We find explicit tree-level
superamplitudes for this MHV band and for other simple sectors of the theory.
4) Dual conformal generators are constructed, and we explore the dual conformal
properties of the simplest massive amplitudes. Our compact expressions for
amplitudes and superamplitudes should be of both theoretical and
phenomenological interest; in particular the tree-level results carry over to
truncations of the theory with less supersymmetry.Comment: 29 pages, 1 figur