A phenomenological study of hybrid stars in which the crossover transition from quark to hadron makes the EOS stiffer in contrast to the hybrid EOS based on Maxwell condition

doi:10.1142/S0217732317500511

	A phenomenological study of hybrid stars in which the crossover transition from quark to hadron makes the EOS stiffer in contrast to the hybrid EOS based on Maxwell condition
	Zhao, Tong 1; Li, Cheng-Ming 2; Zhao, Ya-Peng 2; Yan, Yan 2,3; Luo, Xin-Lian 3; Zong, Hong-Shi 2,4,5
刊名	MODERN PHYSICS LETTERS A
	2017-03-14
卷号	32 期号:8 页码:14
关键词	Equation of state Dyson-Schwinger equation Maxwell condition crossover model
ISSN号	0217-7323
DOI	10.1142/S0217732317500511
通讯作者	Zong, Hong-Shi(zonghs@nju.edu.cn)
英文摘要	In this paper, we make a phenomenological study of the mass-radii relationship of hybrid stars from the point of view of the smooth crossover phase transition. We find a way to construct stiff hybrid equations of state (EOSs) with soft EOSs of both the quark matter and the hadronic matter. For the hadron phase, we adopt the EOS softened by introducing hyperons that are considered to exist in the core of a neutron star. For the quark phase, we introduce a quark EOS based on the Dyson-Schwinger equation (DSE) that is calculated in our previous work, and it is also a soft EOS. In contrast to the hybrid EOS based on Maxwell condition, we find that the resulting EOS is stiff and the maximum mass of the hybrid stars is still about two times of solar mass. This result indicates the rich possibilities of the crossover model.
WOS关键词	EQUATION-OF-STATE ; NEUTRON-STARS ; MATTER ; MODEL ; QCD ; MASS ; DENSITY
WOS研究方向	Physics
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000396173300006
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/23183]
专题	中国科学院紫金山天文台
通讯作者	Zong, Hong-Shi
作者单位	1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Dept Phys, Key Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Jiangsu, Peoples R China 4.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Tong,Li, Cheng-Ming,Zhao, Ya-Peng,et al. A phenomenological study of hybrid stars in which the crossover transition from quark to hadron makes the EOS stiffer in contrast to the hybrid EOS based on Maxwell condition[J]. MODERN PHYSICS LETTERS A,2017,32(8):14.
APA	Zhao, Tong,Li, Cheng-Ming,Zhao, Ya-Peng,Yan, Yan,Luo, Xin-Lian,&Zong, Hong-Shi.(2017).A phenomenological study of hybrid stars in which the crossover transition from quark to hadron makes the EOS stiffer in contrast to the hybrid EOS based on Maxwell condition.MODERN PHYSICS LETTERS A,32(8),14.
MLA	Zhao, Tong,et al."A phenomenological study of hybrid stars in which the crossover transition from quark to hadron makes the EOS stiffer in contrast to the hybrid EOS based on Maxwell condition".MODERN PHYSICS LETTERS A 32.8(2017):14.