Bulk viscosity of spin-one color superconducting strange quark matter

Xinyang Wang, Igor Shovkovy

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Article number085007
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume82
Issue number8
DOIs
StatePublished - Oct 5 2010

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quarks
viscosity
color
pulsars
critical temperature
superconductivity
retarding
inclusions
temperature
augmentation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bulk viscosity of spin-one color superconducting strange quark matter. / Wang, Xinyang; Shovkovy, Igor.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 82, No. 8, 085007, 05.10.2010.

Research output: Contribution to journalArticle

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