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arXiv · 1101.2095

Transport coefficients in non-quasiparticle systems

A. Jakovac
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Abstract

Transport coefficeints, in particular the shear viscosity to entropy density ratio is studied in systems where the small-width quasiparticle assumption is not valid. It is found that $η/s$ has no unversal lower bound, the minimal value depends on the system and the temperature, and can be even zero. We construct models where the $1/4π$ conjectured bound is violated.

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A. Jakovac. 2011-01-11. Transport coefficients in non-quasiparticle systems. https://doi.org/10.1051/epjconf%2F20111306004

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