Isoscalar-vector interaction and hybrid quark core in massive neutron stars
Shao, GY; Colonna, M; Di Toro, M; Liu, YX; Liu, B;刘波(理)
刊名PHYSICAL REVIEW D
2013
卷号87期号:9页码:96012
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.87.096012
英文摘要The hadron-quark phase transition in the core of massive neutron stars is studied with a newly constructed two-phase model. For nuclear matter, a nonlinear Walecka type model with general nucleon-meson and meson-meson couplings, recently calibrated by Steiner, Hemper and Fischer, is taken. For quark matter, a modified Polyakov-Nambu-Jona-Lasinio model, which gives consistent results with lattice QCD data, is used. Most importantly, we introduce an isoscalar-vector interaction in the description of quark matter, and we study its influence on the hadron-quark phase transition in the interior of massive neutron stars. With the constraints of neutron star observations, our calculation shows that the isoscalar-vector interaction between quarks is indispensable if massive hybrids star exist in the universe, and its strength determines the onset density of quark matter, as well as the mass-radius relations of hybrid stars. Furthermore, as a connection with heavy-ion-collision experiments we give some discussions about the strength of isoscalar-vector interaction and its effect on the signals of hadron-quark phase transition in heavy-ion collisions, in the energy range of the NICA at JINR-Dubna and FAIR at GSI-Darmstadt facilities.
收录类别SCI
WOS记录号WOS:000319207600003
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被引频次:14[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224775
专题中国科学院高能物理研究所_理论物理室_期刊论文
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Shao, GY,Colonna, M,Di Toro, M,et al. Isoscalar-vector interaction and hybrid quark core in massive neutron stars[J]. PHYSICAL REVIEW D,2013,87(9):96012.
APA Shao, GY,Colonna, M,Di Toro, M,Liu, YX,&Liu, B;刘波.(2013).Isoscalar-vector interaction and hybrid quark core in massive neutron stars.PHYSICAL REVIEW D,87(9),96012.
MLA Shao, GY,et al."Isoscalar-vector interaction and hybrid quark core in massive neutron stars".PHYSICAL REVIEW D 87.9(2013):96012.
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