Modern compact star observations and the quark matter equation of state

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dc.creatorKlahn, T.
dc.creatorBlaschke, D.
dc.creatorSandin, F.
dc.creatorFuchs, C.
dc.creatorFaessler, A.
dc.creatorGrigorian, H.
dc.creatorRopke, G.
dc.creatorTrumper, J.
dc.date2006-09-25
dc.date2007-11-20
dc.date.accessioned2026-07-07T11:07:38Z
dc.date.available2026-07-07T11:07:38Z
dc.descriptionWe present a hybrid equation of state (EoS) for dense matter that satisfies phenomenological constraints from modern compact star (CS) observations which indicate high maximum masses (M = 2 M_sun) and large radii (R> 12 km). The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy-ion collisions and a deconfinement transition at approx. 0.55 fm^{-3}. The quark matter phase is described by a 3-flavor Nambu--Jona-Lasinio model that accounts for scalar diquark condensation and vector meson interactions while the nuclear matter phase is obtained within the Dirac-Brueckner-Hartree-Fock (DBHF) approach using the Bonn-A potential. We demonstrate that both pure neutron stars and neutron stars with quark matter cores (QCSs) are consistent with modern CS observations. Hybrid star configurations with a CFL quark core are unstable.
dc.description16 pages, 4 figures; published version, important note added in proof
dc.identifierhttps://arxiv.org/abs/nucl-th/0609067
dc.identifierhttp://arxiv.org/abs/nucl-th/0609067
dc.identifierPhys.Lett.B654:170-176,2007
dc.identifierdoi:10.1016/j.physletb.2007.08.048
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189908
dc.subjectNuclear Theory
dc.titleModern compact star observations and the quark matter equation of state
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