2010/06/30 by Xinyang Wang, I. A. Shovkovy, Igor A. Shovkovy
Physics and Astronomy · #Color superconductivity #Condensed matter physics #High-Energy Particle Collisions Research #Particle physics #Physics #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quark #Spin (aerodynamics) #Strange matter #Strange quark #Superconductivity #Thermodynamics #Viscosity #astro-ph.HE #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.82.085007
published as Phys.Rev.D82:085007,2010 · 10 pages, 4 multi-panel figures, including one new in the final version
arxiv created 2010/09/03 · openalex publication_date 2010/10/05 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The bulk viscosity in spin-one color superconducting strange quark matter is calculated by taking into account the interplay between the nonleptonic and semileptonic week processes. In agreement with previous studies, it is found that the inclusion of the semileptonic processes may result in non-negligible corrections to the bulk viscosity in a narrow window of temperatures. The effect is generally more pronounced for pulsars with longer periods. Compared to the normal phase, however, this effect due to the semileptonic processes is less pronounced in spin-one color superconductors. Assuming that the critical temperature of the phase transition is much larger than 40 keV, the main effect of spin-one color superconductivity in a wide range of temperatures is an overall increase of the bulk viscosity with respect to the normal phase. The corresponding enhancement factor reaches up to about 9 in the polar and A phases, about 25 in the planar phase, and about 29 in the color-spin-locked (CSL) phase. This factor is determined by the suppression of the nonleptonic rate in color superconducting matter and, therefore, may be even larger if all quark quasiparticles happen to be gapped.