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

Yevgeny Kats; Pavel Petrov

doi:10.1088/1126-6708/2009/01/044

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

Yevgeny Kats, Pavel Petrov

Research output: Contribution to journal › Article › peer-review

271 Scopus citations

Abstract

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 1/4π on the viscosity-to-entropy ratio is violated for finite N.

Original language	English
Article number	044
Journal	Journal of High Energy Physics
Volume	2009
Issue number	1
DOIs	https://doi.org/10.1088/1126-6708/2009/01/044
State	Published - 8 Apr 2009
Externally published	Yes

Keywords

1/N expansion
AdS-CFT correspondence
Black holes in string theory
Thermal field theory

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1088/1126-6708/2009/01/044

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abstract = "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 1/4π on the viscosity-to-entropy ratio is violated for finite N.",

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AB - 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 1/4π on the viscosity-to-entropy ratio is violated for finite N.

KW - 1/N expansion

KW - AdS-CFT correspondence

KW - Black holes in string theory

KW - Thermal field theory

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

Abstract

Keywords

ASJC Scopus subject areas

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