Effect of curvature squared corrections in AdS on the viscosity of the dual gauge theory

被引：290

作者：

Kats, Yevgeny ^{[1
]}

Petrov, Pavel ^{[1
]}

机构：

[1] Harvard Univ, Jefferson Phys Lab, Cambridge, MA 02138 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2009年 / 01期

关键词：

AdS-CFT Correspondence; Thermal Field Theory; 1/N Expansion; Black Holes in String Theory;

D O I：

10.1088/1126-6708/2009/01/044

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 AdS(5) 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 1/4 pi on the viscosity-to-entropy ratio is violated for finite N.

引用

页数：15

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