Abstract
In this paper, we study the impact of dark matter (DM) on neutron stars (NSs) that contain antikaon (including [Formula: see text] and [Formula: see text]) 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 [Formula: see text] and [Formula: see text] 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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