Chiral Symmetry in Dense Matter with Meson Condensation
Abstract
Kaon condensation in hyperon-mixed matter [(+) phase], which may be realized in neutron stars, is discussed on the basis of chiral symmetry. With the use of the effective chiral Lagrangian for kaon--baryon and kaon--kaon interactions; coupled with the relativistic mean field theory and universal three-baryon repulsive interaction, we clarify the effects of the -wave kaon--baryon scalar interaction simulated by the kaon--baryon sigma terms and vector interaction (Tomozawa--Weinberg term) on kaon properties in hyperon-mixed matter, the onset density of kaon condensation, and the equation of state with the (+) phase. In particular, the quark condensates in the (+) phase are obtained, and their relevance to chiral symmetry restoration is discussed.
Cite
@article{arxiv.2502.12192,
title = {Chiral Symmetry in Dense Matter with Meson Condensation},
author = {Takumi Muto and Toshiki Maruyama and Toshitaka Tatsumi},
journal= {arXiv preprint arXiv:2502.12192},
year = {2025}
}
Comments
22 pages, 7 figures, published in Symmetry 2025,17,270, the Special Issue: Chiral Symmetry, and Restoration in Nuclear Dense Matter. arXiv admin note: substantial text overlap with arXiv:2411.09967