The viscosity bound in string theory
Aninda Sinha,Robert C. Myers +1 more
TLDR
It is shown that in a broad class of models quantum corrections yield values of η / s just above the KSS bound, however, incorporating matter fields in the fundamental representation typically leads to violations of this bound.About:
This article is published in Nuclear Physics.The article was published on 2009-11-01 and is currently open access. It has received 93 citations till now. The article focuses on the topics: Non-critical string theory & AdS/QCD correspondence.read more
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Holographic GB gravity in arbitrary dimensions
Alex Buchel,Alex Buchel,Jorge Escobedo,Jorge Escobedo,Robert C. Myers,Miguel F. Paulos,Aninda Sinha,Michael Smolkin,Michael Smolkin +8 more
TL;DR: In this article, the authors studied the properties of the holographic CFT dual to Gauss-Bonnet gravity in general D(≥ 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 GB gravity in arbitrary dimensions
Alex Buchel,Alex Buchel,Jorge Escobedo,Jorge Escobedo,Robert C. Myers,Miguel F. Paulos,Aninda Sinha,Michael Smolkin,Michael Smolkin +8 more
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.
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Holographic studies of quasi-topological gravity
TL;DR: In this article, the authors established various elements of the AdS/CFT dictionary for the duality of quasi-topological gravity and showed that the minimum value of the shear-viscosity-toentropy-density ratio for this model is η/s ≃ 0.4140/(4π).
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The shear viscosity to entropy ratio: a status report
TL;DR: In this paper, the authors highlight some of the lessons that the holographic gauge/gravity duality has taught us regarding the behavior of the shear viscosity to entropy density in strongly coupled field theories.
Journal ArticleDOI
Holographic studies of quasi-topological gravity
TL;DR: In this paper, the authors established various elements of the AdS/CFT dictionary for the duality of quasi-topological gravity and derived the minimum value of the shear-viscosity-to-entropy-density ratio for this model.
References
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Viscosity in strongly interacting quantum field theories from black hole physics
TL;DR: It is provided evidence that this value of shear viscosity to volume density of entropy may serve as a lower bound for a wide class of systems, thus suggesting that black hole horizons are dual to the most ideal fluids.
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Conformal collider physics: energy and charge correlations
Diego M. Hofman,Juan Maldacena +1 more
TL;DR: In this article, the authors studied the correlation functions of the energies deposited on calorimeters placed at a large distance from the colliders and showed that the small angle singularities of energy correlation functions are controlled by the twist of nonlocal light-ray operators with a definite spin.
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Viscosity Bound Violation in Higher Derivative Gravity
TL;DR: In this paper, the authors consider the shear viscosity to entropy density ratio in conformal field theories dual to Einstein gravity with curvature square corrections, and they find that the value of the Shear V2R can be adjusted to any positive value from infinity down to zero.
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Viscosity, Black Holes, and Quantum Field Theory
TL;DR: In this article, the authors show how the hydrodynamic behavior of field theory is reflected in the low-momentum limit of correlation functions computed through a real-time AdS/CFT prescription, which they formulate.
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Conformal relativistic viscous hydrodynamics: Applications to RHIC results at s NN =200 GeV
Matthew Luzum,Paul Romatschke +1 more
TL;DR: In this paper, a new set of equations for relativistic viscous hydrodynamics that captures both weak coupling and strong coupling physics to second order in gradients has been developed.