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Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars

Influence of the nuclear equation of state on the hadron-quark phase transition in neutron stars
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摘要 We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core. We study the hadron-quark phase transition in the interior of neutron stars, and examine the influence of the nuclear equation of state on the phase transition and neutron star properties. The relativistic mean field theory with several parameter sets is used to construct the nuclear equation of state, while the Nambu-Jona-Lasinio model is used for the description of the deconfined quark phase. Our results show that a harder nuclear equation of state leads to an earlier onset of a mixed phase of hadronic and quark matter. We find that a massive neutron star possesses a mixed phase core, but it is not dense enough to possess a pure quark core.
作者 杨芳 申虹
机构地区 Department of Physics
出处 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第7期536-542,共7页 中国物理C(英文版)
基金 Supported by National Natural Science Foundation of China(10675064) Specialized Research Fund for the Doctoral Program of Higher Education(20040055010)
关键词 hadron-quark phase transition equation of state neutron stars hadron-quark phase transition, equation of state, neutron stars
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