Antikaon condensation and deconfinement phase transition in neutron stars

Details Antikaon condensation and deconfinement phase transition in neutron stars Antikaon condensation and deconfinement phase transition in neutron stars

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006phrvc..73e5803g&link_type=abstract

Physical Review C, vol. 73, Issue 5, id. 055803

Physics

7

Nuclear Matter Aspects Of Neutron Stars, Nuclear Matter, Elementary Particle Processes, Bag Model

Scientific paper

Antikaon condensation and deconfinement phase transition in neutron stars are investigated in a chiral hadronic model (also referred as to the FST model) for the hadronic phase and in the MIT bag model for the deconfined quark matter phase. It is shown that the existence of quark matter phase makes antikaon condensation impossible in neutron stars. The properties of neutron stars are sensitive to the bag constant. For the small values of the bag constant, the pure quark matter core appears and hyperons are strongly suppressed in neutron stars, whereas for the large bag constant, the hadron-quark mixed phase exists in the center of neutron stars. The maximum masses of neutron stars with the quark matter phase are lower than those without the quark matter phase; meanwhile, the maximum masses of neutron stars with the quark matter phase increase with the bag constant.

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