2007/01/31 by Mark G. Alford, Mark Alford, Matt Braby +3 · 2 citations
Physics and Astronomy · #Boson #Cold Atom Physics and Bose-Einstein Condensates #Color superconductivity #Condensed matter physics #Flavor #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Physics #Pulsars and Gravitational Waves Research #Quark #Strange matter #Strange quark #Strangeness #Superfluidity #Thermodynamics #Viscosity #Volume viscosity #astro-ph #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.75.055209
published as Phys.Rev.C75:055209,2007 · 23 pages, LaTeX; corrected typos and a numerical error in the last 3 figures. Conclusions unchanged
openalex publication_date 2007/05/29 · arxiv created 2007/09/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.