title: Shear viscosity of a unitary Fermi gas.
abstract: We present an ab initio determination of the shear viscosity η 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 η/s. The minimum of η/s appears to be located above the critical temperature for the superfluid-to-normal phase transition with the most probable value being (η/s)min≈0.2ℏ/k(B), which is close the Kovtun-Son-Starinets universal value ℏ/(4πk(B)).
authors.affiliation: Faculty of Physics, Warsaw University of Technology, Ulica Koszykowa 75, 00-662 Warsaw, Poland.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Wlazłowski
authors.forename: Piotr
authors.initials: P
authors.lastname: Magierski
authors.forename: Joaquín E
authors.initials: JE
authors.lastname: Drut