期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 6, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP06(2011)007
关键词
Black Holes; Holography and quark-gluon plasmas; Gauge-gravity correspondence
资金
- Israeli Science Foundation center of excellence
- Deutsch-Israelische Projektkooperation (DIP)
- US-Israel Binational Science Foundation (BSF)
- German-Israeli Foundation (GIF)
The null horizon focusing equation is equivalent via the fluid/gravity correspondence to the entropy balance law of the fluid. Using this equation we derive a simple novel formula for the bulk viscosity of the fluid. The formula is expressed in terms of the dependence of scalar fields at the horizon on thermodynamic variables such as the entropy and charge densities. We apply the formula to three classes of gauge theory plasmas: non-conformal branes, perturbations of the N = 4 supersymmetric Yang-Mills theory and holographic models of QCD, and discuss its range of applicability.
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