Kaon Condensation in Neutron Stars with Skyrme-Hartree-Fock Models

Yeunhwan Lim, Kyujin Kwak, Chang Ho Hyun, Chang-Hwan Lee

Published 2013-12-10, updated 2014-05-14Version 2

We investigate nuclear matter equations of state in neutron star with kaon condensation. It is generally known that the existence of kaons in neutron star makes the equation of state soft so that the maximum mass of neutron star is not likely to be greater than 2.0 $M_{\odot}$, the maximum mass constrained by current observations. With existing Skyrme force model parameters, we calculate nuclear equations of state and check the possibility of kaon condensation in the core of neutron stars. The results show that even with the kaon condensation, the nuclear equation of state satisfies both the maximum mass and the allowed ranges of mass and radius.