Shear Viscosity of a Unitary Fermi Gas
Quantum Gases
2012-07-16 v2 High Energy Physics - Lattice
Nuclear Theory
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).
Keywords
Cite
@article{arxiv.1204.0270,
title = {Shear Viscosity of a Unitary Fermi Gas},
author = {Gabriel Wlazłowski and Piotr Magierski and Joaquín E. Drut},
journal= {arXiv preprint arXiv:1204.0270},
year = {2012}
}
Comments
8 pages, 9 figures; supplemental materials included