Massive neutron stars and Lambda-hypernuclei in relativistic mean field models
文献类型：期刊论文
| 作者 | Zhang, SS; Sun, TT; Xia, CJ; Smith, MS |
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2018 |
| 卷号 | 42期号:2页码:25101 |
| ISSN号 | 1674-1137 |
| 关键词 | MESON COUPLING MODEL P-SHELL HYPERNUCLEI EQUATION-OF-STATE BINDING-ENERGIES XI-HYPERNUCLEI GROUND-STATE NUCLEI MATTER MASSES SIGMA |
| DOI | 10.1088/1674-1137/42/2/025101 |
| 英文摘要 | Based on relativistic mean field (RMF) models, we study finite Lambda-hypernuclei and massive neutron stars. The effective N-N interactions PK1 and TM1 are adopted, while the N-Lambda interactions are constrained by reproducing the binding energy of Lambda-hyperon at 18 orbit of Delta 40Ca. It is found that the Lambda-meson couplings follow a simple relation, indicating a fixed A potential well for symmetric nuclear matter at saturation densities, i.e., around V Lambda = -29.786 MeV. With those interactions, a large mass range of Lambda-hypernuclei can be described well. Furthermore, the masses of PSR J1614-2230 and PSR J0348+0432 can be attained adopting the Lambda-meson couplings g sigma(Lambda)/g sigma(N) greater than or similar to 0.73, g omega(Lambda)/g omega(N) greater than or similar to 0.80 for PK1 and g sigma(Lambda)/g sigma(N) greater than or similar to 0.81, g omega Lambda/g omega N greater than or similar to 0.90 TM1, respectively. This resolves the hyperon puzzle without introducing any additional degrees of freedom. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22964]  |
| 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.Zhejiang Univ, Ningbo Inst Technol, Sch Informat Sci & Engn, Ningbo 315100, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 4.[Smith, M. S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA 5.Zhengzhou Univ, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450001, Henan, Peoples R China 6.Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Henan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, SS,Sun, TT,Xia, CJ,et al. Massive neutron stars and Lambda-hypernuclei in relativistic mean field models[J]. CHINESE PHYSICS C,2018,42(2):25101. |
| APA | Zhang, SS,Sun, TT,Xia, CJ,&Smith, MS.(2018).Massive neutron stars and Lambda-hypernuclei in relativistic mean field models.CHINESE PHYSICS C,42(2),25101. |
| MLA | Zhang, SS,et al."Massive neutron stars and Lambda-hypernuclei in relativistic mean field models".CHINESE PHYSICS C 42.2(2018):25101. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。