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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, Tong1; Li, Cheng-Ming2; Zhao, Ya-Peng2; Yan, Yan2,3; Luo, Xin-Lian3; Zong, Hong-Shi2,4,5
2017-03-14
Source PublicationMODERN PHYSICS LETTERS A
ISSN0217-7323
Volume32Issue:8Pages:14
Corresponding AuthorZong, Hong-Shi(zonghs@nju.edu.cn)
AbstractIn 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.
KeywordEquation of state Dyson-Schwinger equation Maxwell condition crossover model
DOI10.1142/S0217732317500511
WOS KeywordEQUATION-OF-STATE ; NEUTRON-STARS ; MATTER ; MODEL ; QCD ; MASS ; DENSITY
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields ; Physics, Mathematical
WOS IDWOS:000396173300006
PublisherWORLD SCIENTIFIC PUBL CO PTE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23184
Collection中国科学院紫金山天文台
Corresponding AuthorZong, Hong-Shi
Affiliation1.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
Recommended Citation
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.
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