Chiral Symmetry in Dense Matter with Meson Condensation
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866929719917674496 |
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| author | Muto, Takumi Maruyama, Toshiki Tatsumi, Toshitaka |
| author_facet | Muto, Takumi Maruyama, Toshiki Tatsumi, Toshitaka |
| contents | Kaon condensation in hyperon-mixed matter [($Y$+$K$) 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 $s$-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 ($Y$+$K$) phase. In particular, the quark condensates in the ($Y$+$K$) phase are obtained, and their relevance to chiral symmetry restoration is discussed. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_12192 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chiral Symmetry in Dense Matter with Meson Condensation Muto, Takumi Maruyama, Toshiki Tatsumi, Toshitaka Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology Kaon condensation in hyperon-mixed matter [($Y$+$K$) 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 $s$-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 ($Y$+$K$) phase. In particular, the quark condensates in the ($Y$+$K$) phase are obtained, and their relevance to chiral symmetry restoration is discussed. |
| title | Chiral Symmetry in Dense Matter with Meson Condensation |
| topic | Nuclear Theory High Energy Astrophysical Phenomena High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.12192 |