Bulk viscosity of strange quark matter: Urca versus non-leptonic processes

Abstract

A general formalism for calculating the bulk viscosity of strange quark matter is developed. Contrary to the common belief that the non-leptonic processes alone give the dominant contribution to the bulk viscosity, the inclusion of the Urca processes is shown to play an important role at intermediate densities when the characteristic r-mode oscillation frequencies are not too high. The interplay of non-leptonic and Urca processes is analyzed in detail

9 pages, 4 figures, v2: revised figures, no change in results

References in corpus (2)

• Two lectures on color superconductivity
• Baryon number conservation and enforced electric charge neutrality for bulk viscosity in quark matter

Cited by in corpus (2)

• Nonadiabatic charged spherical gravitational collapse
• Bulk viscosity in kaon-condensed color-flavor locked quark matter