ムトウ　タクミ   Takumi Muto   武藤　巧    所属   千葉工業大学  情報変革科学部 教育センター（情報変革科学部）    職種   教授
言語種別	英語
発行・発表の年月	2021/09/10
形態種別	学術雑誌
査読	査読あり
標題	Effects of three-baryon forces on kaon condensation in hyperon-mixed matter
執筆形態	共著
掲載誌名	Physics Letters B
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	820,pp.136587-1-136587-6
総ページ数	6
担当範囲	全範囲
担当区分	筆頭著者
国際共著	国際共著
著者・共著者	Takumi Muto, Toshiki Maruyama, Toshitaka Tatsumi
概要	Possibility of kaon-condensed phase in hyperon-mixed matter is considered on the basis of chiral symmetry for kaon-baryon and kaon-kaon interactions, being combined with the relativistic mean-field theory for two-body baryon interaction. In addition, universal three-baryon repulsive force in the string-junction model and phenomenological three-nucleon attractive force are introduced. It is shown that softening of the equation of state stemming from both kaon condensation and mixing of hyperons is compensated with the repulsive effect of the three-baryon force and the relativistic effect for two-body baryon-baryon interaction. The latter effect reflects the density-dependence of scalar and vector meson mean-fields, which is constrained by the contribution of the attractive three-nucleon force to the binding energy at saturation density. The kaon-condensed phase in hyperon-mixed matter becomes stiff enough to be consistent with recent observations of massive neutron stars.