Non-universal lower bound for the shear viscosity to entropy density ratio

Details Non-universal lower bound for the shear viscosity to entropy density ratio Non-universal lower bound for the shear viscosity to entropy density ratio

2009-11-17

arxiv.org/abs/0911.3248v2

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 2 figures, revtex4; references added, minor corrections in the text

Scientific paper

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. It is shown that the lower bound in a generic physical system 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 1/4pi value.

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