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arXiv · 1204.0270

Shear Viscosity of a Unitary Fermi Gas

Gabriel Wlazłowski·Piotr Magierski·Joaquín E. Drut
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Abstract

We present the first ab initio determination of the shear viscosity eta of the Unitary Fermi Gas, based on finite temperature quantum Monte Carlo calculations and the Kubo linear-response formalism. We determine the temperature dependence of the shear viscosity to entropy density ratio eta/s. The minimum of eta/s appears to be located above the critical temperature for the superfluid-to-normal phase transition with the most probable value being eta/s approx 0.2 hbar/kB, which almost saturates the Kovtun-Son-Starinets universal value hbar/(4 pi kB).

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Gabriel Wlazłowski, Piotr Magierski, Joaquín E. Drut. 2012-04-01. Shear Viscosity of a Unitary Fermi Gas. https://doi.org/10.1103/physrevlett.109.020406

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