Isospin properties of quark matter from a 3-flavor NJL model
Liu, H; Xu, J; Chen, LW; Sun, KJ; Xu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
2016
发表期刊PHYSICAL REVIEW D
ISSN2470-0010
卷号94期号:6页码:-
文章类型期刊论文
摘要We have studied the properties of hot and dense quark matter based on the 3-flavor Nambu-Jona-Lasinio (NJL) model as well as its Polyakov-loop extension (pNJL) with scalar-isovector and vector-isovector couplings. Provided a considerable large isospin asymmetry or isospin chemical potential, isospin splittings of constituent mass, chiral phase transition boundary, and critical point for u and d quarks can be observed for positive isovector coupling constants but are suppressed for negative ones. The quark matter symmetry energy decreases with the increasing isovector coupling constant, and is mostly enhanced in the pNJL model than in the NJL model. A positive scalar-isovector coupling constant is more likely to lead to an unstable isospin asymmetric quark matter. The isovector coupling has been further found to affect particle fractions as well as the equation of state in hybrid stars. Possible effects on the isospin properties of quark matter have also been discussed if the strangeness sector is further broken among the flavor symmetry.
DOI10.1103/PhysRevD.94.065032
收录类别SCI
语种英语
WOS记录号WOS:000384075500007
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26552
专题中科院上海应用物理研究所2011-2018年
通讯作者Xu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
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Liu, H,Xu, J,Chen, LW,et al. Isospin properties of quark matter from a 3-flavor NJL model[J]. PHYSICAL REVIEW D,2016,94(6):-.
APA Liu, H,Xu, J,Chen, LW,Sun, KJ,&Xu, J .(2016).Isospin properties of quark matter from a 3-flavor NJL model.PHYSICAL REVIEW D,94(6),-.
MLA Liu, H,et al."Isospin properties of quark matter from a 3-flavor NJL model".PHYSICAL REVIEW D 94.6(2016):-.
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