Dissipative superfluids, from cold atoms to quark matter
arXiv:0910.4326
Abstract
Some results about dissipative processes in superfluids are presented. We focus on fermionic superfluidity and restrict our analysis to the contribution of phonons to bulk viscosity, shear viscosity and thermal conductivity. At sufficiently low temperatures phonons give the dominant contribution to the transport coefficients if all the other low energy excitation of the system are gapped. We first consider a system of cold fermionic atoms close to the unitarity limit. Then we turn to the superfluid phase of quark matter that may be realized at high baryonic density.
10 pages, Lecture given at "Three Days of Strong Interactions", Wroclaw (Poland) 9. - 11. VII. 2009
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