We propose an action for an unstable Dp-brane with dynamical tension. We show that the equations of motion are equivalent to the equations of motion derived from Dirac-Born-Infeld and Wess-Zumino actions for a non-Bogomol’nyi-Prasad-Sommerfield Dp-brane. We also find the Hamiltonian formulation of t…

[Phys. Rev. D 94, 046004] Published Wed Aug 10, 2016

It is established that physical observables in local quantum field theories should be invariant under invertible field redefinitions. It is then expected that this statement should be true for the entanglement entropy and moreover that, via the gauge/gravity correspondence, the recipe for computing …

[Phys. Rev. D 94, 046002] Published Mon Aug 08, 2016

In arXiv [K. Narayan, arXiv:1501.03019.], the areas of certain complex extremal surfaces in de Sitter space were found to have resemblance with entanglement entropy in appropriate dual Euclidean nonunitary CFTs, with the area being real and negative in ${\mathrm{dS}}_4$. In this paper, we study some toy models of…

[Phys. Rev. D 94, 046001] Published Wed Aug 03, 2016

We study the time evolution of Wightman two-point functions of scalar fields in ${\mathrm{AdS}}_3$-Vaidya, a spacetime undergoing gravitational collapse. In the boundary field theory, the collapse corresponds to a quench process where the dual $1+1$-dimensional CFT is taken out of equilibrium and subsequently therm…

[Phys. Rev. D 94, 026010] Published Thu Jul 28, 2016

We analytically consider the spontaneous formation of a fermionic crystalline geometry in a gravity background with Lifshitz scaling and/or hyperscaling violation. A fermionic vortex lattice solution sourced by the lowest Landau level has been obtained. Thermodynamic analysis shows that the fermioni…

[Phys. Rev. D 94, 026011] Published Thu Jul 28, 2016

We propose an open/closed string duality in general backgrounds extending previous ideas about open string completeness by Ashoke Sen. Our proposal sets up a general version of holography that works in gravity as a tomographic principle. We argue, in particular, that previous expectations of a super…

[Phys. Rev. D 94, 026009] Published Thu Jul 21, 2016

We investigate finite ${\alpha }^{\prime }$ effects in string theory on a black hole background. By explicitly computing tree-level scattering amplitudes, we confirm a duality between seemingly different states recently conjectured by Giveon, Itzhaki, and Kutasov. We verify that the relevant 3-point functions factoriz…

[Phys. Rev. D 94, 026008] Published Fri Jul 15, 2016

Recently it has been shown that the peak of the quarkonium entropy at the deconfinement transition is related to the emergent entropic force which destructs the quarkonium. Using the AdS/CFT correspondence, we consider dissociation of a moving heavy quarkonium by entropic force. For larger distance …

[Phys. Rev. D 94, 026007] Published Thu Jul 14, 2016

We consider charged black holes in four-dimensional anti–de Sitter space, in the presence of a Weyl correction. We obtain the solution including the effect of backreaction, perturbatively up to first order in the Weyl coupling, and study its thermodynamic properties. This is complemented by a calcul…

[Phys. Rev. D 94, 026006] Published Wed Jul 13, 2016

We study the breaking of gauge symmetry for higher spin theory on ${\mathrm{AdS}}_4$ dual to the 3d critical $\mathrm{O}(N)$ vector model. It was argued that the breaking is due to the change of boundary condition for a scalar field through a loop effect and the Goldstone modes are bound states of a scalar field and higher …

[Phys. Rev. D 94, 026004] Published Mon Jul 11, 2016

Thanks to the impressive progress of conformal bootstrap methods we have now very precise estimates of both scaling dimensions and operator product expansion coefficients for several 3D universality classes. We show how to use this information to obtain similarly precise estimates for off-critical c…

[Phys. Rev. D 94, 026005] Published Mon Jul 11, 2016

We study the properties of a D6-brane probe in the Aharony-Bergman-Jafferis-Maldacena (ABJM) background with smeared massless dynamical quarks in the Veneziano limit. Working at zero temperature and nonvanishing charge density, we show that the system undergoes a quantum phase transition in which th…

[Phys. Rev. D 94, 026003] Published Thu Jul 07, 2016

We investigate how the holographic correspondence can be reformulated as a generalization of Wilsonian renormalization group (RG) flow in a strongly interacting large-$N$ quantum field theory. We first define a highly efficient RG flow as one in which the Ward identities related to local conservation …

[Phys. Rev. D 94, 026001] Published Tue Jul 05, 2016

We complete the reformulation of the holographic correspondence as a highly efficient renormalization group (RG) flow that can also determine the UV data in the field theory in the strong-coupling and large-$N$ limit. We introduce a special way to define operators at any given scale in terms of approp…

[Phys. Rev. D 94, 026002] Published Tue Jul 05, 2016

The subvacuum phenomena, induced by the squeezed vacuum of the strongly coupled quantum critical fields with a dynamical scaling $z$, are explored by a probe particle. The holographic description corresponds to a string moving in ($4+1$)-dimensional Lifshitz geometry with gravitational wave perturbation…

[Phys. Rev. D 93, 126006] Published Wed Jun 29, 2016

We revisit a class of $SU(5)$ supersymmetric grand unified theory (SUSY GUT) models which arise in the context of the spectral cover with Klein Group monodromy $V_4=Z_2\times Z_2$. We examine the polynomials of the corresponding factorized spectral cover and discuss the constraints imposed on their coefficients …

[Phys. Rev. D 93, 126007] Published Wed Jun 29, 2016

We derive a formula which applies to conformal field theories on a spatial torus and gives the asymptotic density of states solely in terms of the vacuum energy on a parallel plate geometry. The formula follows immediately from global scale and Lorentz invariance, but to our knowledge has not previo…

[Phys. Rev. D 93, 126005] Published Mon Jun 20, 2016

The entanglement exhibits extremal or singular behavior near quantum critical points (QCPs) in many condensed matter models. These intriguing phenomena, however, still call for a widely accepted understanding. In this paper we study this issue in holographic framework. We investigate the connection …

[Phys. Rev. D 93, 126004] Published Fri Jun 17, 2016

We give explicit analytical expressions for the partition function of $U(N{)}_k\times U(N+M{)}_{-k}$ ABJ theory at weak coupling ($k\to \infty$) for finite and arbitrary values of $N$ and $M$ (including the ABJM case and its mass-deformed generalization). We obtain the expressions by identifying the one-matrix model formulation …

[Phys. Rev. D 93, 126003] Published Wed Jun 15, 2016

Generalizing the first law of thermodynamics, the increase in entropy density $\delta S(x)$ of a conformal field theory (CFT) is proportional to the increase in energy density, $\delta E(x)$, of a subsystem divided by a spatially dependent entanglement temperature, $T_E(x)$, a fixed parameter determined by the geometr…

[Phys. Rev. D 93, 126002] Published Tue Jun 07, 2016

In the probe limit, we investigate holographic paramagnetism-ferromagnetism phase transition in the four-dimensional and five-dimensional Lifshitz black holes by means of numerical and semianalytical methods, which is realized by introducing a massive 2-form field coupled to the Maxwell field. We fi…

[Phys. Rev. D 93, 126001] Published Mon Jun 06, 2016

In this paper, based on the fundamental principles of gauge/gravity duality and considering a global quench, we probe the physics of thermalization for certain special classes of strongly coupled nonrelativistic quantum field theories that are dual to an asymptotically Schrödinger $Dp$ brane space tim…

[Phys. Rev. D 93, 106008] Published Tue May 31, 2016

In this paper the detailed Coleman-Callan-Wess-Zumino procedure for introducing fermions on the world sheet of a string propagating in flat space-time is presented. The theory of nonlinear realizations is used to derive the transformation as well as the interactions of fermionic matter fields under …

[Phys. Rev. D 93, 106007] Published Thu May 26, 2016

Within the AdS/CFT framework, string theory in “integrable” curved backgrounds may also be described by Bethe ansatz equations. By carefully accounting for the “wrapping” corrections, the authors show that, in the case of a certain background ($Ad{S}_3\times S^3\times T^4$), Bethe ansatz description can match the string theory calculations.

[Phys. Rev. D 93, 106006] Published Wed May 25, 2016

We investigate how the dimensionless ratio given by the Chern-Simons diffusion rate ${\mathrm{\Gamma }}_{\mathrm{CS}}$ divided by the product of the entropy density $s$ and temperature $T$ behaves across different kinds of phase transitions in the class of bottom-up nonconformal Einstein-dilaton holographic models originally proposed…

[Phys. Rev. D 93, 106005] Published Tue May 24, 2016

String bit models provide a possible method to formulate a string as a discrete chain of pointlike string bits. When the bit number $M$ is large, a chain behaves as a continuous string. We study the simplest case that has only one bosonic bit and one fermionic bit. The creation and annihilation operat…

[Phys. Rev. D 93, 106004] Published Fri May 20, 2016

We study in detail the relationship between strong subadditivity for a boundary field theory and energy conditions for its bulk dual in $2+1$ dimensions. We provide a discussion of known facts and new results organized from the simplest case of a static system with collinear intervals to a time-depend…

[Phys. Rev. D 93, 106003] Published Tue May 10, 2016

We construct the free field representation of irregular vertex operators of arbitrary rank which generates simultaneous eigenstates of positive modes of Virasoro and W symmetry generators. The irregular vertex operators turn out to be the exponentials of combinations of derivatives of Liouville or T…

[Phys. Rev. D 93, 106002] Published Wed May 04, 2016

Recently, it was established in Einstein-Maxwell-Dilaton gravity that the Kovtun-Son-Starinets viscosity/entropy ratio associated with anti-de Sitter planar black holes can be viewed as the boundary dual to the generalized Smarr relation of the black holes in the bulk. In this paper, we establish th…

[Phys. Rev. D 93, 106001] Published Tue May 03, 2016

We report on a classification of supersymmetric solutions to 11D supergravity with $SO(2,2)\times SO(3)$ isometry, which are $\mathrm{AdS}/\mathrm{CFT}$ dual to 2D CFTs with $\mathcal{N}=(0,4)$ supersymmetry. We recover the Maldacena, Strominger, Witten near-horizon with small superconformal symmetry and identify a class of ${\mathrm{AdS}}_3\times S^2\times S^2\times C{Y}_2$…

[Phys. Rev. D 93, 086010] Published Wed Apr 27, 2016

The peak of the heavy quark pair entropy at the deconfinement transition, observed in lattice QCD, suggests that the transition is effectively driven by the increase of the entropy of bound states. The growth of the entropy with the interquark distance leads to the emergent entropic force that induc…

[Phys. Rev. D 93, 086009] Published Tue Apr 26, 2016

We describe the pure spinor string in the ${\mathrm{AdS}}_5\times S^5$ using unconstrained matrices first used by Roiban and Siegel for the Green-Schwarz superstring.

[Phys. Rev. D 93, 086008] Published Mon Apr 25, 2016

Our earlier paper “Complexity Equals Action” conjectured that the quantum computational complexity of a holographic state is given by the classical action of a region in the bulk (the “Wheeler-DeWitt” patch). We provide calculations for the results quoted in that paper, explain how it fits into a br…

[Phys. Rev. D 93, 086006] Published Mon Apr 18, 2016

The recently derived expressions for finite gauge transformations in double field theory with duality group $O(d,d)$ are generalized to give expressions for finite gauge transformations for extended field theories with duality group $SL(5,\mathbb{R})$, $SO(5,5)$ and $E_6$. The generalized metrics are discussed.

[Phys. Rev. D 93, 086007] Published Mon Apr 18, 2016

We study the properties of two-point functions and quasinormal modes in a strongly coupled field theory holographically dual to a small black hole in global anti-de Sitter spacetime. Our results are seen to smoothly interpolate between known limits corresponding to large black holes and thermal AdS …

[Phys. Rev. D 93, 086004] Published Thu Apr 14, 2016

Using holography we study the evolution of the Wilson loop of a quark-antiquark pair in a dynamical strongly coupled plasma. The time-dependent plasma, whose dynamics is originated from the energy injection, is dual to the anti–de Sitter-Vaidya background. The quark-antiquark pair is represented by …

[Phys. Rev. D 93, 086005] Published Thu Apr 14, 2016

From black hole thermodynamics, the Bekenstein bound has been proposed as a universal thermal entropy bound. It has been further generalized to an entanglement entropy bound which is valid even in a quantum system. In a quantumly entangled system, the non-negativity of the relative entropy leads to …

[Phys. Rev. D 93, 086003] Published Mon Apr 11, 2016

Little string theories (LSTs ) are non-local six dimensional (6D) theories that arise as a particular limit in string theory where gravity decouples, and they provide the ultraviolet (UV) completion for 6D effective local quantum field theories. The authors classify all such LSTs and show that they can be obtained as mild extensions of 6D superconformal field theories.

[Phys. Rev. D 93, 086002] Published Thu Apr 07, 2016

In this paper we explore contributions to nonperturbative superpotentials arising from instantons wrapping effective divisors in smooth Calabi-Yau fourfolds. We concentrate on the case of manifolds constructed as complete intersections in products of projective spaces or generalizations thereof. We …

[Phys. Rev. D 93, 086001] Published Fri Apr 01, 2016

We study Bogomol’nyi-Prasad-Sommerfield (BPS) excitations in M5-M2-brane configurations with a compact transverse direction, which are also relevant for type IIa and IIb little string theories. These configurations are dual to a class of toric elliptically fibered Calabi-Yau manifolds $X_N$ with manife…

[Phys. Rev. D 93, 066016] Published Thu Mar 31, 2016

A scenario of moduli stabilization based on the interplay between closed and open string sectors is explored in a bottom-up approach. We study $\mathcal{N}=1$ effective supergravities inspired by type IIB orientifold constructions that include background fluxes and nonperturbative effects. The former generate t…

[Phys. Rev. D 93, 066013] Published Mon Mar 28, 2016

We use compatibility of the second fundamental form corrections to Dirac-Born-Infeld action at order ${\alpha }^{\prime 2}$ which includes the trace of the second fundamental form, with T-duality and with the linear S-duality as guiding principles, to find an off-shell D-brane action at order ${\alpha }^{\prime 2}$ in type II superstrin…

[Phys. Rev. D 93, 066014] Published Mon Mar 28, 2016

We investigate the Drude weight and the related Mazur-Suzuki (MS) bound in a broad variety of strongly coupled field theories with a gravity dual at finite temperature and chemical potential. We revisit the derivation of the recently proposed universal expression for the Drude weight for Einstein-Ma…

[Phys. Rev. D 93, 066015] Published Mon Mar 28, 2016

Hydrodynamics can be formulated as the gradient expansion of conserved currents in terms of the fundamental fields describing the near-equilibrium fluid flow. In the relativistic case, the Navier-Stokes equations follow from the conservation of the stress-energy tensor to first order in derivatives.…

[Phys. Rev. D 93, 066012] Published Fri Mar 25, 2016

Using the linear $T$-dual Ward identity associated with the NS-NS B-field or two Neveu-Schwarz B-fields (NSNS) gauge transformations, some Ramond-Ramond (RR) couplings on ${\mathrm{D}}_p$-branes have been found at order $O({\alpha }^{\prime 2})$. We examine the $C^{(p-1)}$ couplings with the $S$-matrix elements of one RR, one graviton and o…

[Phys. Rev. D 93, 066009] Published Wed Mar 23, 2016

We consider a model of a holographic braneworld universe in which a cosmological fluid occupies a $3+1$-dimensional brane located at the boundary of the asymptotic anti-de Sitter bulk. We combine the $\mathrm{AdS}/\mathrm{CFT}$ correspondence and the second Randall-Sundrum (RSII) model to establish a relationship between…

[Phys. Rev. D 93, 066010] Published Wed Mar 23, 2016

We find, by an appropriate extension of the standard holographic superconductor setup, static bulk solutions which describe holographic duals to non-Abelian vortices. In the core of these vortices, a scalar field condenses, breaking a non-Abelian global symmetry, which leads to additional zero modes…

[Phys. Rev. D 93, 066011] Published Wed Mar 23, 2016

We implement a proper-time UV regularization of the Nambu-Goto string, introducing an independent metric tensor and the corresponding Lagrange multiplier, and treating them in the mean-field approximation justified for long strings and/or when the dimension of space-time is large. We compute the reg…

[Phys. Rev. D 93, 066007] Published Tue Mar 22, 2016

Recently the operator product expansion coefficients of the 3D Ising model universality class have been calculated by studying via Monte Carlo simulation the two-point functions perturbed from the critical point with a relevant field. We show that this method can be applied also when the perturbatio…

[Phys. Rev. D 93, 066008] Published Tue Mar 22, 2016

In this paper, we find the Yangian algebra responsible for the integrability of the ${\mathrm{AdS}}_2\times S^2\times T^6$ superstring in the planar limit. We demonstrate the symmetry of the corresponding exact $S$ matrix in the massive sector, including the presence of the secret symmetry. We give two alternative presentations …

[Phys. Rev. D 93, 066006] Published Fri Mar 18, 2016

We develop the framework of boundary derivative expansion (BDE) formalism of fluid/gravity correspondence in a compactified D4-brane system, which is a nonconformal background used in top-down holographic QCD models. Such models contain the D4-D6 model and the Sakai-Sugimoto (SS) model, with the bac…

[Phys. Rev. D 93, 066005] Published Thu Mar 17, 2016

We use the heat kernel method to calculate the entanglement entropy for a given entangling region on a fractal. The leading divergent term of the entropy is obtained as a function of the fractal dimension as well as the walk dimension. The power of the UV cutoff parameter is (generally) a fractional…

[Phys. Rev. D 93, 066004] Published Wed Mar 16, 2016

Nambu–Jona-Lasinio (NJL) interactions are introduced into the D3/probe D7 system using Witten’s double trace operator prescription which includes the operator as a classical term in the effective potential. In the supersymmetric system the interactions do not induce chiral symmetry breaking, which w…

[Phys. Rev. D 93, 066002] Published Tue Mar 15, 2016

We develop the $1/N$ expansion for stable string bit models, focusing on a model with bit creation operators carrying only transverse spinor indices $a=1,\dots ,s$. At leading order ($N=\infty$), this model produces a (discretized) light cone string with a “transverse space” of $s$ Grassmann worldsheet fields. Higher…

[Phys. Rev. D 93, 066003] Published Tue Mar 15, 2016

We consider the real topological string on certain noncompact toric Calabi-Yau three-folds $\mathbb{X}$, in its physical realization describing an orientifold of type IIA on $\mathbb{X}$ with an O4-plane and a single D4-brane stuck on top. The orientifold can be regarded as a new kind of surface operator on the gauge the…

[Phys. Rev. D 93, 066001] Published Wed Mar 09, 2016

We introduce a prescription to compute the entanglement entropy of Galilean conformal field theories by combining gravitational anomalies and an İnönü-Wigner contraction. We find that our expression for the entanglement entropy in the thermal limit reproduces the Cardy formula for Galilean conformal…

[Phys. Rev. D 93, 046005] Published Fri Feb 26, 2016

In the Lorentzian $\mathrm{AdS}/\mathrm{CFT}$ correspondence, CFTs are identified by asymptotic boundary surfaces and the boundary conditions imposed on those surfaces. However, AdS can be foliated in various ways to give different boundaries. We show that the CFTs obtained using certain distinct foliations are differe…

[Phys. Rev. D 93, 046004] Published Tue Feb 23, 2016

Recently, there has been much interest in holographic computations of two-point nonequilibrium Green functions from anti–de Sitter- (AdS-)Vaidya backgrounds. In the strongly coupled quantum field theory on the boundary, the dual interpretation of the background is an equilibration process called a h…

[Phys. Rev. D 93, 046002] Published Wed Feb 17, 2016

We consider a D1-brane as a natural probe of the group manifold with mixed three-form fluxes. We determine the Lax connection for a given theory. Then we switch to the canonical analysis and calculate the Poisson brackets between spatial components of Lax connections, and we argue for the integrabil…

[Phys. Rev. D 93, 046003] Published Wed Feb 17, 2016

We study pairs of coaxial vortex rings starting from the action for a classical bosonic string in a three-form background. We complete earlier work on the phase diagram of classical orbits by explicitly considering the case where the circulations of the two vortex rings are equal and opposite. We th…

[Phys. Rev. D 93, 046001] Published Wed Feb 10, 2016

We study the moduli space of (framed) self-dual instantons on $\mathbb{C}{P}^2$. These are described by an Atiyah-Drinfeld-Hitchin-Manin (ADHM)-like construction which allows us to compute the Hilbert series of the moduli space. The latter has been found to be blind to certain compact directions. In this paper, w…

[Phys. Rev. D 93, 026009] Published Thu Jan 28, 2016

We carry out a systematic study of entanglement entropy in nonrelativistic conformal field theories via holographic techniques. After a discussion of recent results concerning Galilean conformal field theories, we deduce a novel expression for the entanglement entropy of ($1+1$)-dimensional Lifshitz f…

[Phys. Rev. D 93, 026010] Published Wed Jan 27, 2016

We discuss a quantum deformation of the Green-Schwarz superstring on flat space, arising as a contraction limit of the corresponding deformation of ${\mathrm{AdS}}_5\times {\mathrm{S}}^5$. This contraction limit turns out to be equivalent to a previously studied limit that yields the so-called mirror model—the model obtained from …

[Phys. Rev. D 93, 026008] Published Mon Jan 25, 2016

We studied the evolution of the Wightman correlator in a thermalizing state modeled by ${\mathrm{AdS}}_3$-Vaidya background. We gave a prescription for calculating the Wightman correlator in coordinate space without using any approximation. For equal-time correlator $⟨O(v,x)O(v,0)⟩$, we obtained an enhancement fact…

[Phys. Rev. D 93, 026007] Published Tue Jan 19, 2016

In this paper we calculate the holographic entanglement entropy in the presence of a conformal interface for a geometric configuration in which the entangling region $\mathcal{A}$ lies on one side of the interface. For the supersymmetric Janus solution we find exact agreement between the holographic and conform…

[Phys. Rev. D 93, 026006] Published Wed Jan 13, 2016

We calculate fermionic response in domain wall backgrounds of four-dimensional gauged supergravity interpolating between distinct stable anti–de Sitter (AdS) vacua, holographically dual to zero-temperature states of ABJM theory at finite density for monopole charge. The backgrounds were found by Bob…

[Phys. Rev. D 93, 026001] Published Tue Jan 12, 2016

Two quantum field theories whose Hilbert spaces do not overlap cannot transmit a signal to one another. From this simple principle, we deduce some highly nontrivial consequences for holographic quantum gravity. These include: (i) certain cosmological bounces are forbidden, (ii) generic singularities…

[Phys. Rev. D 93, 026005] Published Tue Jan 12, 2016

We consider the D1-D5 CFT near the orbifold point, specifically the computation of correlators involving twist sector fields using covering surface techniques. As is well known, certain twists introduce spin fields on the cover. Here we consider the bosonization of fermions to facilitate computation…

[Phys. Rev. D 93, 026004] Published Fri Jan 08, 2016

A holographic realization for ferromagnetic systems is constructed. Owing to the holographic dictionary proposed on the basis of this realization, we obtain relevant thermodynamic quantities such as magnetization, magnetic susceptibility, and free energy. This holographic model reproduces the behavi…

[Phys. Rev. D 93, 026002] Published Thu Jan 07, 2016

We study the action of the Burg-Metzner-Sachs (BMS) group in critical, bosonic string theory living on a target space of the form ${\mathbb{M}}^d\times C$. Here $M^d$ is $d$-dimensional (asymptotically) flat spacetime and $C$ is an arbitrary compactification. We provide a treatment of generalized Ward-Takahashi identities and…

[Phys. Rev. D 93, 026003] Published Thu Jan 07, 2016

In a $d$-dimensional conformal field theory, it has been known that a relevant deformation operator with the conformal dimension, $\mathrm{\Delta }=\frac{d+2}{2}$, generates a logarithmic correction to the entanglement entropy. In the large ’t Hooft coupling limit, we can investigate such a logarithmic correction holographical…

[Phys. Rev. D 92, 126013] Published Wed Dec 30, 2015

We use the AdS/CFT correspondence and the holographic softwall model to investigate the deep inelastic scattering in the exponentially small-$x$ (Bjorken parameter) regime. We calculate the corresponding structure functions for scalar fields. Using these results, we study the problem of the saturation…

[Phys. Rev. D 92, 126012] Published Tue Dec 29, 2015

We study the energy representation of conformal quantum mechanics as the Whittaker vector without specifying the classical Lagrangian. We show that a generating function of expectation values among two excited states of the dilatation operator in conformal quantum mechanics is a solution to the Whee…

[Phys. Rev. D 92, 126010] Published Mon Dec 28, 2015

Naively applying holographic duality to gapped gravity on anti-de Sitter space seems to suggest that the stress tensor of the field theory dual cannot be conserved. On the other hand, by symmetry arguments, it seems that the dual should not violate Poincare symmetry. To clarify this apparent contrad…

[Phys. Rev. D 92, 126011] Published Wed Dec 23, 2015

For a field theory with a gravitational dual, following Susskind’s proposal we define holographic complexity for a subsystem. The holographic complexity is proportional to the volume of a codimension one time slice in the bulk geometry enclosed by the extremal codimension two hypersurface appearing …

[Phys. Rev. D 92, 126009] Published Wed Dec 16, 2015

We study implications of the weak gravity conjecture in the AdS/CFT correspondence. Unlike in Minkowski spacetime, Anti-de Sitter (AdS) spacetime has a physical length scale, so that the conjecture must be generalized with an additional parameter. We discuss possible generalizations and translate th…

[Phys. Rev. D 92, 126006] Published Mon Dec 14, 2015

We consider several configurations that describe Wilson loops in nonrelativistic field theories, and for some of them we find systems of coupled nonlinear differential equations. Also, we find a nontrivial drag force at zero temperature, which suggests that the parameter controlling the deviation of…

[Phys. Rev. D 92, 126007] Published Mon Dec 14, 2015

We study quenched disorder in strongly correlated systems via holography, focusing on the thermodynamic effects of mild electric disorder. Disorder is introduced through a random potential which is assumed to self-average on macroscopic scales. Studying the flow of this distribution with energy scal…

[Phys. Rev. D 92, 126008] Published Mon Dec 14, 2015

In this work we investigate the entropic information measure in the context of braneworlds with nonconstant curvature. The braneworld entropic information is studied for gravity modified by the square of the Ricci scalar, besides the usual Einstein-Hilbert term. We showed that the minimum value of t…

[Phys. Rev. D 92, 126005] Published Fri Dec 11, 2015

In this paper, we propose a novel expansion to compute the large interval limit of the Rényi entropy of 2D conformal field theory (CFT) at high temperature. Via the replica trick, the single interval Rényi entropy of 2D CFT at finite temperature could be read from the partition function on $n$-sheeted…

[Phys. Rev. D 92, 126002] Published Thu Dec 10, 2015

In this paper, we extend the Hamilton-Kabat-Lifschytz-Lowe (HKLL) holographic smearing function method to reconstruct (quasi)local anti-de Sitter bulk scalar observables in the background of a large anti-de Sitter black hole formed by null shell collapse (a “pure state” black hole), from the dual co…

[Phys. Rev. D 92, 126003] Published Tue Dec 08, 2015

We study the time dependence of the entanglement entropy of disjoint intervals following a global quantum quench in ($1+1$)-dimensional CFTs at large $c$ with a sparse spectrum. The result agrees with a holographic calculation but differs from the free field theory answer. In particular, a simple model …

[Phys. Rev. D 92, 126004] Published Tue Dec 08, 2015

One of the most important problems in any conformal field theory is the calculation of three-point functions of primary operators. In this paper we provide explicit examples of correlators with two scalar operators in $\mathcal{N}=4$ super-Yang-Mills theory at large $N$, corresponding to pulsating semiclassical s…

[Phys. Rev. D 92, 126001] Published Tue Dec 01, 2015

We study integrable open boundary conditions for $\mathfrak{d}(2,1;\alpha {)}^2$ and $\mathfrak{p}\mathfrak{s}\mathfrak{u}(1,1|2{)}^2$ spin-chains. Magnon excitations of these open spin-chains are mapped to massive excitations of type-IIB open superstrings ending on D-branes in the ${\mathrm{AdS}}_3\times S^3\times S^3\times S^1$ and ${\mathrm{AdS}}_3\times S^3\times T^4$ supergravity geometries with pure R-R flux. We d…

[Phys. Rev. D 92, 106006] Published Wed Nov 25, 2015

Localization of a spin-$1/2$ fermion on the braneworld is an important and interesting problem. It is well known that a five-dimensional free massless fermion $\mathrm{\Psi }$ minimally coupled to gravity cannot be localized on the Randall-Sundrum braneworld. In order to trap such a fermion, the coupling between the…

[Phys. Rev. D 92, 106007] Published Wed Nov 25, 2015

We find a class of analytic solutions in open bosonic string field theory, parametrized by the chiral copy of higher spin algebra in ${\mathrm{AdS}}_3$. The solutions are expressed in terms of the generating function for the products of Bell polynomials in derivatives of bosonic space-time coordinates $X^m(z)$ of th…

[Phys. Rev. D 92, 106008] Published Wed Nov 25, 2015

We study thermoelectric conductivities and shear viscosities in a holographically anisotropic model, which is dual to a spatially anisotropic $\mathcal{N}=4$ super-Yang-Mills theory at finite chemical potential. Momentum relaxation is realized through perturbing the linear axion field. Ac conductivity exhibits …

[Phys. Rev. D 92, 106005] Published Thu Nov 19, 2015

We use the compatibility of D-brane action with linear T-duality, S-duality, and with S-matrix elements as guiding principles to find all world volume couplings of one massless closed string and two open strings at order ${\alpha }^{\prime 2}$ in type-II superstring theories. In particular, we find that the squares of…

[Phys. Rev. D 92, 106004] Published Wed Nov 18, 2015

Dynamic $\mathrm{AdS}/\mathrm{QCD}$ is a modification of $\mathrm{AdS}/\mathrm{QCD}$ that includes the running of the anomalous dimension of the $\overline{q}q$ quark bilinear and in which the generation of the constituent quark mass plays the role of an IR wall. The model allows one to move away smoothly from the controlled spectrum of the $\mathcal{N}=2$ super…

[Phys. Rev. D 92, 106003] Published Tue Nov 17, 2015

Within massive gravity, we construct a gravity dual for the insulator/metal phase transition and colossal magnetoresistance effect found in some manganese oxides materials. In the heavy graviton limit, a remarkable magnetic-field-sensitive DC resistivity peak appears at the Curie temperature, where …

[Phys. Rev. D 92, 106002] Published Thu Nov 05, 2015

In this paper, we study the holographic Rényi entropy of a large interval on a circle at high temperature for the two-dimensional conformal field theory (CFT) dual to pure ${\mathrm{AdS}}_3$ gravity. In the field theory, the Rényi entropy is encoded in the CFT partition function on $n$-sheeted torus connected with …

[Phys. Rev. D 92, 106001] Published Mon Nov 02, 2015

We study phase transitions driven by fermionic double-trace deformations in gauge-gravity duality. Both the strength of the double-trace deformation and the infrared conformal dimension/self-energy scaling of the quasiparticle can be used to decrease the critical temperature to zero, leading to a li…

[Phys. Rev. D 92, 086004] Published Wed Oct 28, 2015

We construct a holographic model in the framework of Q-lattices whose dual exhibits metal-insulator transitions. By introducing an interacting term between the Q-lattice and the electromagnetic field in bulk geometry, we find such kind of transition can be Mott-like. The evidences are presented as f…

[Phys. Rev. D 92, 086003] Published Tue Oct 20, 2015

We propose a gravity dual of antiferromagnetic quantum phase transition induced by magnetic field and study the critical behavior around the quantum critical point. It turns out that the boundary critical theory is a strong coupling theory with dynamic exponent $z=2$ and that the hyperscaling law is v…

[Phys. Rev. D 92, 086001] Published Wed Oct 07, 2015

The $\mathcal{N}=2^{*}$ theory is obtained by deforming $\mathcal{N}=4$ supersymmetric Yang–Mills theory with two relevant operators of dimensions 2 and 3. We study the holographic entanglement entropy of the $\mathcal{N}=2^{*}$ theory along the whole renormalization group flow. We find that in the UV the holographic entanglement entropy fo…

[Phys. Rev. D 92, 086002] Published Wed Oct 07, 2015

We calculate configuration energies of stringlike membranes in M2- and M5-brane spaces. In the near horizon approximation these backgrounds reduce to ${\mathrm{AdS}}_4\times S^7$ and ${\mathrm{AdS}}_7\times S^4$ spaces and the dual theories are supersymmetric $SU(N)$ gauge theories, in accordance with the AdS/CFT correspondence. In this case …

[Phys. Rev. D 92, 066010] Published Fri Sep 25, 2015

We analytically study the phase transitions between $s$-wave holographic insulator/superconductor and metal/superconductor. The problem is solved by the variational method for the Sturm-Liouville eigenvalue problem in the theory with the dark matter sector of a $U(1)$-gauge field coupled to the Maxwell …

[Phys. Rev. D 92, 066008] Published Thu Sep 24, 2015

We consider a holographic setup where relativistic invariance is broken by a chemical potential, and a non-Abelian internal symmetry is broken spontaneously. We use the tool of holographic renormalization in order to infer what can be learned purely by analytic boundary considerations. We find that …

[Phys. Rev. D 92, 066009] Published Thu Sep 24, 2015

In this paper we propose a new way of obtaining a four-dimensional gauge invariant $U(n)$ gauge field from a bulk action. The results are valid for both Randall-Sundrum scenarios and are obtained without the introduction of other fields or new degrees of freedom. The model is based only in nonminimal …

[Phys. Rev. D 92, 066006] Published Tue Sep 22, 2015

We study the behavior of a simple string bit model at finite temperature. We use thermal perturbation theory to analyze the high temperature regime. But at low temperatures we rely on the large $N$ limit of the dynamics, for which the exact energy spectrum is known. Since the lowest energy states at i…

[Phys. Rev. D 92, 066007] Published Tue Sep 22, 2015