Quark stars in the pure pseudo-Wigner phase
文献类型：期刊论文
| 作者 | Su, Li-Qun2; Shi, Chao3; Huang, Yong-Feng1,4; Yan, Yan5 ; Li, Cheng-Ming6; Yuan, Wen-Li2,7,8; Zong, Hong-Shi2,9,10,11
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| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
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| 出版日期 | 2024-03-01 |
| 卷号 | 369期号:3页码:29 |
| 关键词 | Compact objects Neutron stars Gravitational waves Pulsars |
| ISSN号 | 0004-640X |
| DOI | 10.1007/s10509-024-04296-5 |
| 产权排序 | 4 |
| 英文摘要 | In this paper, we consider the scenario of a pure quark star which is completely composed of quarks in the pseudo-Wigner phase. The equation of state (EoS) of deconfined quark stars is studied in the framework of the two-flavor NJL model, and the self-consistent mean field approximation is employed by introducing a parameter alpha combining the original Lagrangian and the Fierz-transformed Lagrangian, L-R = (1-alpha)L + alpha L-F, to measure the weights of different interaction channels. We assume deconfinement phase transition happens along with the chiral phase transition. Thus, due to the lack of description of confinement in the NJL model, the vacuum pressure is set to confine quarks at low densities, which is the pressure corresponding to the critical point of chiral phase transition. We find that the bag constant shifts from (130 MeV)(4) to (150 MeV)(4) as alpha grows. When alpha is around 0.9, the mass-radius relations of deconfined quark stars can meet the requirement of pulsar observations. In addition, the tidal deformability Lambda is found to range in 253 - 482, which satisfies the astronomical constraint of Lambda < 800 for 1.4-solar-mass neutron stars. |
| WOS关键词 | EQUATION-OF-STATE ; SUPER-HYPERNUCLEI ; BAG CONSTANT ; NJL-MODEL ; DEPENDENCE ; MATTER |
| 资助项目 | National Natural Science Foundation of China[12233002] ; National Natural Science Foundation of China[12075117] ; National Natural Science Foundation of China[11535005] ; National Natural Science Foundation of China[12005192] ; National Natural Science Foundation of China[11690030] ; National SKA Program of China[2020SKA0120300] ; China Postdoctoral Science Foundation[2020M672255] ; China Postdoctoral Science Foundation[2020TQ0287] ; National Key R&D Program of China[2021YFA0718500] ; Nation Major State Basic Research and Development of China[2016YFE0129300] ; Jiangsu Province Postgraduate Research and Practice Innovation Programme[KYCX23_0100] ; Fundamental Research Funds for the Central Universities[1227050553] ; Xinjiang Tianchi Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001195204400001 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China ; National SKA Program of China ; China Postdoctoral Science Foundation ; National Key R&D Program of China ; Nation Major State Basic Research and Development of China ; Jiangsu Province Postgraduate Research and Practice Innovation Programme ; Fundamental Research Funds for the Central Universities ; Xinjiang Tianchi Program |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6228]  |
| 专题 | 研究单元未命名 |
| 通讯作者 | Yan, Yan |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China 2.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China 3.Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Technol, Nanjing 210016, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 5.Changzhou Univ, Sch Microelect & Control Engn, Changzhou 213164, Peoples R China 6.Zhengzhou Univ, Sch Phys & Lab Zhongyuan Light, Zhengzhou 450001, Peoples R China 7.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 8.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 9.Anhui Normal Univ, Dept Phys, Wuhu 241000, Peoples R China 10.Nanjing Univ, Nanjing Proton Source Res & Design Ctr, Nanjing 210093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Li-Qun,Shi, Chao,Huang, Yong-Feng,et al. Quark stars in the pure pseudo-Wigner phase[J]. ASTROPHYSICS AND SPACE SCIENCE,2024,369(3):29. |
| APA | Su, Li-Qun.,Shi, Chao.,Huang, Yong-Feng.,Yan, Yan.,Li, Cheng-Ming.,...&Zong, Hong-Shi.(2024).Quark stars in the pure pseudo-Wigner phase.ASTROPHYSICS AND SPACE SCIENCE,369(3),29. |
| MLA | Su, Li-Qun,et al."Quark stars in the pure pseudo-Wigner phase".ASTROPHYSICS AND SPACE SCIENCE 369.3(2024):29. |
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来源：新疆天文台
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