Nucleonic $^{1}S_{0}$ Superfluidity Induced by a Soft Pion in Neutron Star Matter with Antikaon Condensations
Yan Xu1,2 , Qi-Jun Zhi2 , Yi-Bo Wang1 , Xiu-Lin Huang1** , Wen-Bo Ding3 , Zi Yu4 , Cheng-Zhi Liu1**
1 Changchun Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Changchun 1301172 Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing, Guiyang 5500253 College of Mathematics and Physics, Bohai University, Jinzhou 1210004 College of Science, Nanjing Forestry University, Nanjing 210037
Abstract ：The nucleonic $^{1}S_{0}$ superfluidity is investigated by solving the gap equation for the Reid soft-core potential as the nucleon–nucleon interaction in neutron star (NS) matter which is considered to be made up of n, p, e, $\mu$ and condensed antikaon matter. We mainly study the influence of the soft pion-induced potential on the nucleonic $^{1}S_{0}$ pairing gaps in the above NS matter. It is found that the intensities of the nucleonic $^{1}S_{0}$ pairing gaps including the soft pion-induced potential are smaller than those calculated in the case of not including the soft pion-induced potential. Furthermore, the nucleonic $^{1}S_{0}$ pairing gaps with the soft pion-induced potential fall into decline with the deepening of the optical potential of antikaons in the above NS matter, whereas they increase with the parameter $\eta$ for the fixed optical potential of antikaons. Due to the appearance of the soft pion-induced potential, the maximum values of nucleonic $^{1}S_{0}$ pairing gaps at parameter $\eta=0.20, 0.55$ are suppressed by 1.7%–6.8% with respect to the case without soft pion-induced potential in the above NS matter.
收稿日期: 2019-01-18
出版日期: 2019-05-18
引用本文:
. [J]. 中国物理快报, 2019, 36(6): 61301-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/36/6/061301
或
https://cpl.iphy.ac.cn/CN/Y2019/V36/I6/61301
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2019, Vol. 36 
