Viscosity, Black Holes, and Quantum Field Theory

Details Viscosity, Black Holes, and Quantum Field Theory Viscosity, Black Holes, and Quantum Field Theory

2007-04-02

arxiv.org/abs/0704.0240v2

Ann.Rev.Nucl.Part.Sci.57:95-118,2007

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, a review. New proof of the universality of the viscosity entropy ratio, new derivation of Kubo's formula; references

Scientific paper

10.1146/annurev.nucl.57.090506.1

We review recent progress in applying the AdS/CFT correspondence to finite-temperature field theory. In particular, we 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 we formulate. We also show how the hydrodynamic modes in field theory correspond to the low-lying quasinormal modes of the AdS black p-brane metric. We provide a proof of the universality of the viscosity/entropy ratio within a class of theories with gravity duals and formulate a viscosity bound conjecture. Possible implications for real systems are mentioned.

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