Effect of curvature squared corrections in AdS on the viscosity of the dual gauge theory
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We use the real-time finite-temperature AdS/CFT correspondence to compute the effect of general R 2 corrections to the gravitational action in AdS space on the shear viscosity of the dual gauge theory. The R 2 terms in AdS5 are determined by the central charges of the CFT. We present an example of a four-dimensional gauge theory in which the conjectured lower bound of 1/4π on the viscosity-to-entropy ratio is violated for finite N.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/473d2a73e309b2d17b913b92c112e5852b72aa0e
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In Nuclear and High Energy Physics
Citations in the corpus
- Holographic Lovelock gravities and black holes (2009, background): “some cases associated with finite N corrections [31-32,33], which are expected to smooth out the phase transition.”
- Holographic GB gravity in arbitrary dimensions (2009, background): “Still the precise string theory constructions where these higher curvature terms are under control only allow for perturbative violations of the bound [11, 12, 13].”
- Universal hydrodynamics of non-conformal branes (2009, background): “Corrections to the KSS ratio for higher derivative bulk actions dual to conformal fluids have been investigated in [35].”
- Quantum oscillations and black hole ringing (2009, neutral): “[15, 16, 17, 18]).”
- A Holographic View on Physics out of Equilibrium (2010, neutral): “of large-N superconformal theories [82, 17].”
- Nonlinear fluid dynamics from gravity (2007, background): “It would be interesting to investigate whether any of the new two derivative coefficients we have found in this paper display extended universality features and also whether they are sensitive to higher derivative terms as discussed recently for the shear viscosity to entropy ratio in [45, 46].”
- Causality in AdS/CFT and Lovelock theory (2009, background): “Besides, quadratic curvature corrections were shown to arise in the string theory framework [14, 15, 16, 17].”
- The gravity duals of N=2 superconformal field theories (2009, background): “On the other hand, for small |c− a| ≪ a, c we have that the corresponding correction should be [10, 23]”
- Causality constraints in AdS/CFT from conformal collider physics and Gauss-Bonnet gravity (2009, methodology): “The answer was given in the affirmative by Kats and Petrov [13], and further explored more recently by Buchel et al. [14].”
- Holographic Duality with a View Toward Many-Body Physics (2009, background): “It is not clear that GB gravity has a sensible UV completion, but other theories where the KSS value is violated by a small amount do [72].”
- Relativistic Fluid Dynamics in and out of Equilibrium (2017, neutral): “[199, 200] for counter-examples).”
- Holographic studies of quasi-topological gravity (2010, background): “However, it is now understood this KSS bound can be violated in string theory duals of plasmas where c 6= a by the effect of new curvature-squared interactions in the gravitational action [7, 10].”