Bulk viscosity in the nonlinear and anharmonic regime of strange quark matter

Abstract

The bulk viscosity of cold, dense three-flavor quark matter is studied as a function of temperature and the amplitude of density oscillations. The study is also extended to the case of two different types of anharmonic oscillations of density. We point several qualitative effects due to the anharmonicity, although quantitatively they appear to be relatively small. We also find that, in most regions of the parameter space, with the exception of the case of a very large amplitude of density oscillations (i.e. 10% and above), nonlinear effects and anharmonicity have a small effect on the interplay of the nonleptonic and semileptonic processes in the bulk viscosity.

14 pages, 6 figures; v2: Appendix B is omitted, a few new discussions added and some new references added

References in corpus (10)

• Shapiro delay measurement of a two solar mass neutron star
• Color superconductivity in dense quark matter
• The Massive Pulsar PSR J1614-2230: Linking Quantum Chromodynamics, Gamma-ray Bursts, and Gravitational Wave Astronomy
• Large amplitude behavior of the bulk viscosity of dense matter
• Bulk viscosity of strange quark matter: Urca versus non-leptonic processes
• Bulk viscosity in 2SC quark matter
• Bulk viscosity in kaon-condensed color-flavor locked quark matter
• Bulk viscosity of spin-one color superconducting strange quark matter
• Nonlinear radial oscillations of neutron stars
• Baryon number conservation and enforced electric charge neutrality for bulk viscosity in quark matter

Cited by in corpus (5)

• Strongly Correlated Quantum Fluids: Ultracold Quantum Gases, Quantum Chromodynamic Plasmas, and Holographic Duality
• Reaction rates and transport in neutron stars
• Viscous damping of r-modes: Large amplitude saturation
• Bulk viscosity of two-flavor quark matter from the Kubo formalism
• Effective lagrangian for the macroscopic motion of fermionic matter