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arXiv · 1512.03001

Shear viscosity over entropy density ratio with extended quasi-particles

M. Horváth·A. Jakovác
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Abstract

We consider an effective field theory description of beyond-quasi-particle excitations aiming to associate the transport properties of the system with the spectral density of states. Tuning various properties of the many-particle correlations, we investigate how the robust microscopic features are translated into the macroscopic observables like shear viscosity and entropy density. The liquid-gas crossover is analysed using several examples. A thermal constraint on the fluidity measure, the ratio of shear viscosity to entropy density, is discussed.

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M. Horváth, A. Jakovác. 2016-03-29. Shear viscosity over entropy density ratio with extended quasi-particles. https://doi.org/10.1103/physrevd.93.056010

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