Universality of the shear viscosity from supergravity duals

Kovtun, Son, and Starinets proposed a bound on the shear viscosity of any fluid in terms of its entropy density. We argue that this bound is always saturated for gauge theories at large 't Hooft coupling, which admit holographically dual supergravity description.

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Bibliographic Details
Published in:Physical review letters 2004-08, Vol.93 (9), p.090602.1-090602.4, Article 090602
Main Authors: BUCHEL, Alex, LIU, James T
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
General theory of fields and particles
Mechanical and acoustical properties of condensed matter
Mechanical properties of liquids
Physics
The physics of elementary particles and fields
Theory of fundamental strings
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Summary:Kovtun, Son, and Starinets proposed a bound on the shear viscosity of any fluid in terms of its entropy density. We argue that this bound is always saturated for gauge theories at large 't Hooft coupling, which admit holographically dual supergravity description.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.93.090602