Knowledge Management System of Institute of Theoretical Physics, CAS
| Sun, TT; Xia, CJ; Zhang, SS; Smith, MS | |
| Massive neutron stars and Lambda-hypernuclei in relativistic mean field models | |
| Source Publication | CHINESE PHYSICS C
 |
| Language | 英语 |
| Keyword | MESON COUPLING MODEL P-SHELL HYPERNUCLEI EQUATION-OF-STATE BINDING-ENERGIES XI-HYPERNUCLEI GROUND-STATE NUCLEI MATTER MASSES SIGMA |
| Abstract | 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. |
| 2018 | |
| ISSN | 1674-1137 |
| Volume | 42Issue:2Pages:25101 |
| Subject Area | Physics |
| MOST Discipline Catalogue | Physics, Nuclear ; Physics, Particles & Fields |
| DOI | 10.1088/1674-1137/42/2/025101 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/22964 |
| Collection | 理论物理所科研产出_SCI论文 |
| Affiliation | 1.Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Henan, Peoples R China 2.Zhengzhou Univ, Henan Key Lab Ion Beam Bioengn, Zhengzhou 450001, Henan, Peoples R China 3.Zhejiang Univ, Ningbo Inst Technol, Sch Informat Sci & Engn, Ningbo 315100, Zhejiang, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 6.[Smith, M. S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA |
| Recommended Citation GB/T 7714 | Sun, TT,Xia, CJ,Zhang, SS,et al. Massive neutron stars and Lambda-hypernuclei in relativistic mean field models[J]. CHINESE PHYSICS C,2018,42(2):25101. |
| APA | Sun, TT,Xia, CJ,Zhang, SS,&Smith, MS.(2018).Massive neutron stars and Lambda-hypernuclei in relativistic mean field models.CHINESE PHYSICS C,42(2),25101. |
| MLA | Sun, TT,et al."Massive neutron stars and Lambda-hypernuclei in relativistic mean field models".CHINESE PHYSICS C 42.2(2018):25101. |
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