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

Abstract

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.

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

References in corpus (2)

• Low-Energy Quantum Effective Action for Relativistic Superfluids
• Novel Phases at High Density and their Roles in the Structure and Evolution of Neutron Stars

Cited by in corpus (5)

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• Bulk viscosity in kaon-condensed color-flavor locked quark matter
• Transport theory for cold relativistic superfluids from an analogue model of gravity
• Critical temperature for kaon condensation in color-flavor locked quark matter
• Pseudoscalar Goldstone bosons in the color-flavor locked phase at moderate densities