Effect of color superconductivity on the mass and radius of a quark star

Simple item page
dc.creatorRuester, Stefan B.
dc.creatorRischke, Dirk H.
dc.date2003-09-10
dc.date2003-11-24
dc.date.accessioned2026-07-07T10:50:56Z
dc.date.available2026-07-07T10:50:56Z
dc.descriptionWe compare quark stars made of color-superconducting quark matter to normal-conducting quark stars. We focus on the most simple color-superconducting system, a two-flavor color superconductor, and employ the Nambu-Jona-Lasinio (NJL) model to compute the gap parameter and the equation of state. By varying the strength of the four-fermion coupling of the NJL model, we study the mass and the radius of the quark star as a function of the value of the gap parameter. If the coupling constant exceeds a critical value, the gap parameter does not vanish even at zero density. For coupling constants below this critical value, mass and radius of a color-superconducting quark star change at most by ca. 20% compared to a star consisting of normal-conducting quark matter. For coupling constants above the critical value mass and radius may change by factors of two or more.
dc.description16 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/0309022
dc.identifierhttp://arxiv.org/abs/nucl-th/0309022
dc.identifierPhys.Rev.D69:045011,2004
dc.identifierdoi:10.1103/PhysRevD.69.045011
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184693
dc.subjectNuclear Theory
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEffect of color superconductivity on the mass and radius of a quark star
dc.typetext

Files

Collections

arXiv