摘要
The recent measurement of the mass of neutron stars (PSR J1614-2230, PSR J0348+0432, MSP J0740+6620) restricts the lower limit similar to 2M(circle dot) of the maximum mass of such compact stars, making it possible for dense matter to exist in massive stars. The relativistic mean-field theory with parameter sets FSUGold including kaon condensation is used to describe the properties of neutron stars in beta equilibrium. Through careful choice of the parameter of the sigma-cut c(sigma), we are able to produce a maximum mass neutron star with kaon condensation heavier than 2M(circle dot), and we find that the parameter Lambda(nu) of the rho - omega interaction term in this model has a significant effect on K- condensation. In the case of using the sigma-cut scheme, K- condensation occurs only when the rho - omega interaction Lambda(nu) is switched off.
