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Holographic spectral functions and diffusion constants for fundamental matter

TLDR
In this paper, the authors studied the high temperature phase in which the D7-branes extend through the black hole horizon and computed the spectral function for vector, scalar and pseudoscalar modes on the probe.
Abstract
The holographic dual of large-Nc super-Yang-Mills coupled to a small number of flavours of fundamental matter, Nf << Nc, is described by Nf probe D7-branes in the gravitational background of Nc black D3-branes. This system undergoes a first order phase transition characterised by the `melting' of the mesons. We study the high temperature phase in which the D7-branes extend through the black hole horizon. In this phase, we compute the spectral function for vector, scalar and pseudoscalar modes on the D7-brane probe. We also compute the diffusion constant for the flavour currents.

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Journal ArticleDOI

Holographic GB gravity in arbitrary dimensions

TL;DR: In this article, the authors studied the properties of the holographic CFT dual to Gauss-Bonnet gravity in general $D \ge 5$ dimensions and established the AdS/CFT dictionary and in particular related the couplings of the gravitational theory to the universal couplings arising in correlators of the stress tensor of the dual CFT.
Journal ArticleDOI

Holographic phase transitions at finite chemical potential

TL;DR: In this article, the thermal properties of N = 2 super-Yang-Mills theory were studied using holographic techniques and the results for the grand canonical ensemble were compared with those for canonical ensemble in which the baryon density is held fixed.
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D3-D7 Quark-Gluon Plasmas

TL;DR: In this article, a string dual to finite temperature SU(Nc) N=4 SYM coupled to massless fundamental matter introduced by Nf D7 branes, with Abelian flavor symmetry, is presented.
Journal ArticleDOI

Finite Baryon and Isospin Chemical Potential in AdS/CFT with Flavor

TL;DR: In this article, the authors investigated the thermodynamics of a thermal field theory in the presence of both a baryon and an isospin chemical potential and determined the structure of the phase diagram and calculate the relevant thermodynamical quantities both in the canonical and in the grand canonical ensemble.
Journal ArticleDOI

Holographic calculation of the electric conductivity of the strongly coupled quark-gluon plasma near the deconfinement transition

TL;DR: In this paper, the frequency dependent conductivity of strongly coupled quark-gluon plasma is estimated using a bottom up holographic model that can adequately describe recent lattice data for QCD thermodynamics at zero chemical potential.
References
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Journal ArticleDOI

Gauge Theory Correlators from Non-Critical String Theory

TL;DR: In this paper, a boundary of the anti-deSitter space analogous to a cut-off on the Liouville coordinate of the two-dimensional string theory is introduced to obtain certain Green's functions in 3+1-dimensional N = 4 supersymmetric Yang-Mills theory with a large number of colors via non-critical string theory.
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Anti-de Sitter Space, Thermal Phase Transition, And Confinement in Gauge Theories

TL;DR: The correspondence between supergravity and string theory on AdS space and boundary conformal eld theory relates the thermodynamics of N = 4 super Yang-Mills theory in four dimensions to the thermodynamic properties of Schwarzschild black holes in Anti-de Sitter space as mentioned in this paper.
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The Large N Limit of Superconformal Field Theories and Supergravity

TL;DR: In this paper, it was shown that the super-conformal field theory on the brane decouples from the bulk of the field theory in a low energy limit.
Journal ArticleDOI

Low energy hadron physics in holographic QCD

TL;DR: In this paper, a holographic dual of four-dimensional, large N_c QCD with massless flavors was constructed by placing N_f probe D8-branes into a D4 background, where supersymmetry is completely broken.
Journal ArticleDOI

Quasi-normal modes of stars and Black holes

TL;DR: The successes, as well as the limits, of perturbation theory are presented, and its role in the emerging era of numerical relativity and supercomputers is discussed.
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