Application of density dependent parametrization models to asymmetric nuclear matter

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dc.creatorLiu, B.
dc.creatorDi Toro, M.
dc.creatorGreco, V.
dc.creatorShen, C. W.
dc.creatorZhao, E. G.
dc.creatorSun, B. X.
dc.date2007-02-20
dc.date.accessioned2026-07-07T11:03:31Z
dc.date.available2026-07-07T11:03:31Z
dc.descriptionDensity dependent parametrization models of the nucleon-meson effective couplings, including the isovector scalar δ-field, are applied to asymmetric nuclear matter. The nuclear equation of state and the neutron star properties are studied in an effective Lagrangian density approach, using the relativistic mean field hadron theory. It is known that the introduction of a δ-meson in the constant coupling scheme leads to an increase of the symmetry energy at high density and so to larger neutron star masses, in a pure nucleon-lepton scheme. We use here a more microscopic density dependent model of the nucleon-meson couplings to study the properties of neutron star matter and to re-examine the δ-field effects in asymmetric nuclear matter. Our calculations show that, due to the increase of the effective δcoupling at high density, with density dependent couplings the neutron star masses in fact can be even reduced.
dc.description5 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/0702064
dc.identifierhttp://arxiv.org/abs/nucl-th/0702064
dc.identifierPhys.Rev.C75:048801,2007
dc.identifierdoi:10.1103/PhysRevC.75.048801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188620
dc.subjectNuclear Theory
dc.titleApplication of density dependent parametrization models to asymmetric nuclear matter
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