Kaon condensation in neutron stars in relativistic mean field theory with isovector-scalar channel interaction

Physics

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Equations Of State Of Neutron-Star Matter, Forces In Hadronic Systems And Effective Interactions, Neutron Stars

Scientific paper

We study the properties of neutron stars involving antikaon condensation with three different models in the framework of relativistic mean field (RMF) approximation theory: the Glendenning-Moszkowski (GM) model, the Zimanyi-Moszkowski (ZM) model, and the hybrid derivative coupling (HD) model. We take the isovector-scalar (δ-meson) channel interaction into account in our calculations and find that large mass neutron stars with kaon condensation can exist if the kaon optical potential is appropriately weak. The δ-meson channel interaction has a significant influence on the property of neutron stars and the effects are a little different for the three models.

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