Bulk viscosity of superfluid hyperon stars

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dc.creatorGusakov, M. E.
dc.creatorKantor, E. M.
dc.date2008-06-30
dc.date.accessioned2026-07-07T11:52:09Z
dc.date.available2026-07-07T11:52:09Z
dc.descriptionWe calculated bulk viscosity due to non-equilibrium weak processes in superfluid nucleon-hyperon matter of neutron stars. For that, the dissipative relativistic hydrodynamics, formulated in paper [1] for superfluid mixtures, was extended to the case when both nucleons and hyperons are superfluid. It was demonstrated that in the most general case (when neutrons, protons, Lambda, and Sigma^{-} hyperons are superfluid), non-equilibrium weak processes generate sixteen bulk viscosity coefficients, with only three of them being independent. In addition, we corrected an inaccuracy in a widely used formula for the bulk viscosity of non-superfluid nucleon-hyperon matter.
dc.description22 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0806.4914
dc.identifierhttp://arxiv.org/abs/0806.4914
dc.identifierPhys.Rev.D78:083006,2008
dc.identifierdoi:10.1103/PhysRevD.78.083006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204136
dc.subjectAstrophysics
dc.subjectNuclear Theory
dc.titleBulk viscosity of superfluid hyperon stars
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