| Influence of Hyperon on 1S0 Superfluidity of Nucleons in Neutron Star Matter |
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| 作者姓名： | 陈伟 林汝耀 文德华 刘良钢 |
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| 作者单位： | [1]Department of Physics, Jinan University, Guangzhou 510632 [2]Department of Physics, Zhongshan University, Guangzhou 510275 [3]Department of Physics, South China University of Technology, Guangzhou 510641 |
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| 基金项目： | Supported by the National Natural Science Foundation under Grant Nos 10275099, 10175096, 10347124, and the Natural Science Foundation of Jinan University under Grant No 640567. |
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| 摘 要： | We investigate the property of ^1S0 superfluidity of neutrons and protons in the neutron star matter. On the basis of the result, we study the effects of hyperons on the ^1S0 pairing gaps of the two species of the particles. The parameter sets we use are for the Hartree approximation of the relativistic σ - ω model and the mean field approximation of the Walecka model, respectively. The predicted domain of superfluidity is very close to other works, whereas differences appear in the predicted value of the maximum gap. It is found that ∑^-, A and ∑^- have some influences, the scales of which depend on hyperon-meson coupling constants we use besides other factors, on the ^1S0 superfluidity of protons in some density range, and do not have influence on superfluidity of neutrons. Other hyperons have no influence on the ^1S0 superfluidity of neutron and proton due to these hyperons appearing after ^1S0 neutron and proton pairs disappear.
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| 关 键 词： | 重核子 超流性 中子 质子 原子核物理 |
| 收稿时间： | 2005-08-30 |
| 修稿时间： | 2005-08-30 |
Influence of Hyperon on 1S0 Superfluidity of Nucleons in Neutron Star Matter |
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| CHEN Wei, LAM Yu-Yiu, WEN De-Hua, LIU Liang-Gang.Influence of Hyperon on 1S0 Superfluidity of Nucleons in Neutron Star Matter[J].Chinese Physics Letters,2006,23(1):271-274. |
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| Authors: | CHEN Wei LAM Yu-Yiu WEN De-Hua LIU Liang-Gang |
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