The impact of dark matter on neutron stars with antikaon condensations

被引：7
作者：
Ding, Wen-Bo [1 ,2 ]
Cai, Ming-Da [1 ]
Chan, Aik Hui [2 ]
Xu, Yan [3 ]
机构：
[1] Bohai Univ, Coll Phys Sci & Technol, Jinzhou 121000, Peoples R China
[2] Natl Univ Singapore, Phys Dept, Singapore 117551, Singapore
[3] Chinese Acad Sci, Changchun Observ, Natl Astron Observ, Changchun 130117, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2022年 / 37卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Neutron stars; dark matter; antikaon condensation;
D O I：
10.1142/S0217751X22500348
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In this paper, we study the impact of dark matter (DM) on neutron stars (NSs) that contain antikaon (including K- and (K) over bar (0)) condensations. DM is assumed to be made of nonself annihilating, but strongly or weakly self-interacting fermions. The competition between DM and antikaon condensations makes the gross stellar properties and neutrino emission features of NSs change violently. Results show that the role of antikaon condensations on DM-admixed NSs with weak self-interaction among DM particles is considerable. However, the effect of antikaon condensations with strong self-interaction seems feeble. DM with weak self-interaction favors the occurrence of antikaon condensations in turn, and both K- and (K) over bar (0) condensations are allowed in low-mass DM-admixed NSs. With the fixed medium stellar mass, the neutrino emissivity at the core of the DM-admixed NS with antikaon condensations becomes much lower than that in normal NS matter.
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页数：15
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