Gabriel Wlazłowski, Piotr Magierski, Joaquín E. Drut
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 0.11 hbar/kB, which almost saturates the Kovtun-Son-Starinets (KSS) universal value hbar/(4 pi kB).
View original:
http://arxiv.org/abs/1204.0270
No comments:
Post a Comment