Neutron star properties in density-dependent relativistic mean field theory with consideration of an isovector scalar meson
文献类型：期刊论文
| 作者 | Wang, Sha1; Zhang, Hong Fei1; Dong, Jian Ming2,3 |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2014-11-10 |
| 卷号 | 90 |
| ISSN号 | 0556-2813 |
| DOI | 10.1103/PhysRevC.90.055801 |
| 文献子类 | Article |
| 英文摘要 | Based on the density-dependent relativistic mean field theory, the properties for nuclear matter and neutron stars with the effective interaction DD-ME delta including the isovector scalar channel which disentangle the effects of isovector scalar and isovector vector channels by fitting microscopic calculations. The influences of the isovector scalar delta meson on properties of asymmetric nuclear matter at high densities are discussed in detail. The results support that the isovector scalar channel can soften the equation of state through the effects on the nucleon effective mass and the scalar sigma field and impact the behavior of the nuclear matter symmetry energy. Because of the influence on the symmetry energy by the delta meson, a larger proton fraction in neutron stars is predicted by the DD-ME delta calculation, which strongly affects the cooling process of the star. The maximum masses of neutron stars given by the DD-ME delta calculation is 1.97 M-circle dot which is in reasonable agreement with PSR J1614-2230 (1.97 +/- 0.04 M-circle dot) and PSR J0348 + 0432 (2.01 +/- 0.04 M-circle dot). Among all the selected interactions, DD-ME delta gives the smallest radius range. The radius for the 1.4 solar mass neutron star calculated by DD-ME delta is in good agreement with the prediction [Astrophys. J. Lett. 765, L5 (2013)] according to the resent observations. |
| WOS关键词 | EQUATION-OF-STATE ; NUCLEAR-MATTER ; EXOTIC NUCLEI ; GROUND-STATE ; DYNAMICS ; PHYSICS ; RADIUS |
| 资助项目 | Fundamental Research Funds for the Central Universities[lzujbky-2012-5] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000344916400010 |
| 源URL | [http://119.78.100.186/handle/113462/49697]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wang, Sha |
| 作者单位 | 1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Res Ctr Nucl Sci & Technol, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Sha,Zhang, Hong Fei,Dong, Jian Ming. Neutron star properties in density-dependent relativistic mean field theory with consideration of an isovector scalar meson[J]. PHYSICAL REVIEW C,2014,90. |
| APA | Wang, Sha,Zhang, Hong Fei,&Dong, Jian Ming.(2014).Neutron star properties in density-dependent relativistic mean field theory with consideration of an isovector scalar meson.PHYSICAL REVIEW C,90. |
| MLA | Wang, Sha,et al."Neutron star properties in density-dependent relativistic mean field theory with consideration of an isovector scalar meson".PHYSICAL REVIEW C 90(2014). |
入库方式： OAI收割
来源：近代物理研究所
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