Kaon condensation in skyrmion matter and compact stars
Abstract
We address the possibility of the appearance of a charged kaon condensate in neutron star cores described within a generalized Skyrme model. Our treatment of strange degrees of freedom is based on the Bound State Approach by Callan and Klebanov, which allows to obtain an in-medium effective potential for the -wave kaon condensate. We predict the onset of kaon condensation at a certain threshold density - whose value depends on the parameters of the model, and ranges between 1.5 and 2.5 times saturation density -, and obtain both the particle fractions and equation of state for dense matter in the kaon condensed phase. Finally, we discuss the effect of such condensates on the mass-radius curves and other observable properties of neutron stars with kaon condensed cores.
Keywords
Cite
@article{arxiv.2212.00385,
title = {Kaon condensation in skyrmion matter and compact stars},
author = {Christoph Adam and Alberto García Martín-Caro and Miguel Huidobro and Ricardo Vázquez and Andrzej Wereszczynski},
journal= {arXiv preprint arXiv:2212.00385},
year = {2023}
}
Comments
17 pages, 8 figures