Nonuniversal lower bound for the shear viscosity to entropy density ratio

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Abstract

The lower bound of the shear viscosity to entropy density ratio is examined using an exact representation of the ratio through the density of states. Under certain assumptions it can be shown that the lower bound of the ratio is not universal; its value is determined by the entropy density. Some examples of physical systems are discussed in the paper where one can expect violation of the conformal 1/4π value.

Original languageEnglish
Article number045020
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume81
Issue number4
DOIs
Publication statusPublished - Feb 24 2010

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viscosity
entropy
shear

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

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abstract = "The lower bound of the shear viscosity to entropy density ratio is examined using an exact representation of the ratio through the density of states. Under certain assumptions it can be shown that the lower bound of the ratio is not universal; its value is determined by the entropy density. Some examples of physical systems are discussed in the paper where one can expect violation of the conformal 1/4π value.",
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