Bulk viscosity due to kaons in color-flavor-locked quark matter

Details Bulk viscosity due to kaons in color-flavor-locked quark matter Bulk viscosity due to kaons in color-flavor-locked quark matter

2007-01-24

arxiv.org/abs/nucl-th/0701067v2

Phys.Rev.C75:055209,2007

Physics

Nuclear Physics

Nuclear Theory

23 pages, LaTeX; corrected typos and a numerical error in the last 3 figures. Conclusions unchanged

Scientific paper

10.1103/PhysRevC.75.055209

We calculate the bulk viscosity of color-superconducting quark matter in the color-flavor-locked (CFL) phase. We assume that the lightest bosons are the superfluid mode H and the kaons K0 and K+, and that there is no kaon condensate. We calculate the rate of strangeness-equilibrating processes that convert kaons into superfluid modes, and the resultant bulk viscosity. We find that for oscillations with a timescale of milliseconds, at temperatures T << 1 MeV, the CFL bulk viscosity is much less than that of unpaired quark matter, but at higher temperatures the bulk viscosity of CFL matter can become larger.

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