Structures of the strange quark stars within a quasiparticle model
文献类型：期刊论文
| 作者 | Li, BL; Cui, ZF; Yu, ZH; Yan, Y4; An, S; Zong, HS |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2019 |
| 卷号 | 99期号:4页码:43001 |
| 关键词 | EQUATION-OF-STATE GLUON PLASMA MATTER |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.99.043001 |
| 英文摘要 | The structures of strange quark stars are studied within a quasiparticle model obtained by the two-loop approximation. A softer equation of state yields a smaller maximum mass, a smaller radius, and makes the surface energy density and the surface quark chemical potential larger. The parameter space is obtained under the following constraints: the maximum mass of the strange quark star should be larger than 2.0 solar masses, which matches the masses of PSR J0348 + 0432 and PSR J1614-2230, and the surface energy density should be larger than 2.80 x 10(14) g/cm(3). In our parameter space, the surface quark chemical potential is smaller than 308 MeV which is the critical quark chemical potential in QCD without electromagnetism. Also, the tidal Love number k(2) and deformability. are calculated for a 1.4-solar-mass strange quark star. A softer equation of state yields a smaller Lambda(1.4) and leads to a strange quark star that is more compact and less likely to be tidally deformed. The data of GW170817 indicate that the upper bound of Lambda(1.4) is 800 for the low-spin prior, which gives an upper bound of the parameter zeta of the running coupling constant alpha(s) and gives a lower bound of the vacuum pressure density B, i.e., zeta < 0.098 GeV, B > (0.111 GeV)(4). Moreover, the constraint on zeta also plays an important role in phenomenological studies of the quark-gluon plasma. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/23492]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Proton Source Res & Design Ctr, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Changzhou Univ, Sch Math & Phys, Changzhou 213164, Jiangsu, Peoples R China 6.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, BL,Cui, ZF,Yu, ZH,et al. Structures of the strange quark stars within a quasiparticle model[J]. PHYSICAL REVIEW D,2019,99(4):43001. |
| APA | Li, BL,Cui, ZF,Yu, ZH,Yan, Y,An, S,&Zong, HS.(2019).Structures of the strange quark stars within a quasiparticle model.PHYSICAL REVIEW D,99(4),43001. |
| MLA | Li, BL,et al."Structures of the strange quark stars within a quasiparticle model".PHYSICAL REVIEW D 99.4(2019):43001. |
入库方式： OAI收割
来源：理论物理研究所
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