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

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.055209· OSTI ID:20995326

Alford, Mark G; Braby, Matt; Reddy, Sanjay; Schaefer, Thomas ^[1]

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1. Department of Physics, Washington University, St. Louis, Missouri 63130 (United States)

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 K{sup 0} and K{sup +}, 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.

• OSTI ID: 20995326
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 75, Issue 5; Other Information: DOI: 10.1103/PhysRevC.75.055209; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLOR MODEL
CONDENSATES
FLAVOR
KAONS NEUTRAL
MEV RANGE
OSCILLATIONS
POTASSIUM IONS
QUARK MATTER
STRANGENESS
SUPERFLUIDITY
VISCOSITY