We construct analytic solutions describing black holes and branes in asymptotically Lifshitz spacetimes with arbitrary dynamical exponent z for number of dimensions. The model considered consists Einstein gravity negative cosmological constant, a scalar, N U(1) gauge fields dilatonic-like couplings. study the phase diagrams thermodynamic instabilities solution, find qualitative differences between cases 1<= z<2, z=2 z>2.

We present the string dual to SU(N c ) $ \mathcal{N} = 4 SYM, coupled N f massless fundamental flavors, at finite temperature and baryon density. The solution is determined by two dimensionless parameters, both depending on 't Hooft coupling λ h scale set T: ϵ ∼ /N , weighting backreaction of flavor fields \tilde{\delta } \sim {{{\lambda_h^{{{{ - 1}} \left/ {2} \right.}}{n_b}}} {{\left( {{N_f}{T^3}} \right)}} \right.} where n b For small values these parameters given analytically up second...

The transport properties of dense QCD matter play a crucial role in the physics neutron stars and their mergers, but are notoriously difficult to study with traditional quantum field theory tools. Specializing case unpaired quark beta equilibrium, we approach problem through machinery holography, particular V-QCD D3-D7 models, derive results for electrical thermal conductivities shear bulk viscosities. In addition compare viscosity ratio speed sound find that it violates so-called Buchel...

A bstract large set of relevant deformations the ABJM field theory defined on a stack M2 branes is captured holographically by D = 4 $ \mathcal{N} 8 SO(8)-gauged supergravity, which has accordingly been applied to study renormalisation group (RG) flows between distinct superconformal phases. Recently, it discovered that this supergravity not unique, and one-parameter family gaugings maximal exists. The parameter an angle measures mixture electric magnetic vectors gauge SO(8) dyonically. We...

Motivated by the possible presence of deconfined quark matter in neutron stars and their mergers important role transport phenomena these systems, we perform first-ever systematic study different viscosities conductivities dense using gauge/gravity duality. Utilizing V-QCD model, arrive at results that are qualitative disagreement with predictions perturbation theory, which highlights differing properties system weak strong coupling calls for caution use perturbative neutron-star applications.

We present BPS black hole solutions in a four-dimensional $$ \mathcal{N} = 2 supergravity with an abelian dyonic gauging of the universal hypermultiplet moduli space. This arises as SU(3)-invariant subsector reduction massive IIA on six-sphere. The are supported by non-constant scalar, vector and tensor fields interpolate between unique AdS2 × H2 geometry near-horizon region domain-wall DW4 (four-dimensional) description D2-brane at boundary. Some special charged AdS4 or non-relativistic...

We study the effective geometry felt by fluctuations of open strings living on worldvolume probe D-branes in presence background electromagnetic fields. This is captured an action consisting a Maxwell term and topological term, with role metric played string metric. Studying generalized Eddington-Finkelstein coordinates for stationary but non-static manifolds, we consider membrane paradigm to obtain generic formula DC transport coefficients, including effect external fields present branes....

We classify the non-supersymmetric, and perturbatively stable within $D=4$, AdS vacua of maximal $D=4$ supergravity with a dyonic ISO(7) gauging in large sector supergravity. Seven such are established this sector, all them giving rise to non-supersymmetric $\textrm{AdS}_{4} \times \textrm{S}^{6}$ type IIA backgrounds without non-trivial warpings internal fluxes. Then, we analyse dynamics various probe D$p$-branes these searching for potential brane-jet instabilities. In cases, instabilities...

We review the construction of gravitational solutions holographically dual to =1 quiver gauge theories with dynamical flavor multiplets. focus on D3-D7 and consider finite temperature, quark chemical potential case where there is a charged black hole in solution. Discussed physical outputs model include its thermodynamics (with susceptibilities) general hydrodynamic properties.

A bstract We construct the gravity dual of d = 4, $$ \mathcal{N}=4 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>N</mml:mi> <mml:mo>=</mml:mo> <mml:mn>4</mml:mn> </mml:math> , SU( N c ) super Yang-Mills theory, coupled to f flavors dynamical quarks, at non-zero temperature T and nonzero quark density q . The supergravity solutions possess a regular horizon if &gt; 0 include backreaction color D3-branes flavor D7-branes with units electric flux on their worldvolume. At...

The addition of supersymmetric Chern-Simons terms to $$ \mathcal{N}=8 super-Yang-Mills theory in three-dimensions is expected make the latter flow into infrared super-conformal phases. We address this problem holographically by studying effect Romans mass on D2-brane near-horizon geometry. Working a consistent, effective four-dimensional setting provided D = 4 supergravity with dyonic ISO(7) gauging, we verify existence rich web domain walls triggered that interpolate between...

A model consisting of (d+1)-dimensional gravity coupled to spacetime filling charged branes is used study the effects backreaction. The black holes arising from this simple reflect non-linearity gauge field and are thermodynamically stable. By analysing fluctuations system we corroborate that at low values temperature (or large chemical potential) backreaction dominant. We also provide a generalisation Iqbal Liu strategy calculate DC conductivity, in which mass term for fluctuation included....

We study the gravitational duals of $d$-dimensional Yang-Mills theories with $d\leq 6$ in presence an ${\cal O} (N^2)$ density heavy quarks, $N$ number colors. For concreteness we focus on maximally supersymmetric Yang-Mills, but our results apply to a larger class or without supersymmetry. The solutions describe renormalization group flows towards infrared scaling geometries characterized by fixed dynamical and hyperscaling-violating exponents. special case $d=5$ yields $AdS_3 \times...

We show that the value of chiral conductivities associated with anomalous transport is universal in a general class strongly coupled quantum field theories admit gravitational holographic dual large N limit. Our result only applies to presence external gauge fields no dynamical gluon fields. On gravity side follows from near horizon universality fluctuation equations, similar calculation shear viscosity.

A bstract We use holography to study d = 4, $$ \mathcal{N}=4 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>N</mml:mi><mml:mo>=</mml:mo><mml:mn>4</mml:mn></mml:math> , SU( N c ) super Yang-Mills coupled f ≪ quark flavors. place the theory at finite isospin density n I by turning on an chemical potential μ M q with mass. also turn two R-symmetry charge densities 1 2 . show that ground state is a supersymmetric, superfluid, color superconductor, namely finite-density...