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	2022/08/26
形態種別	学術雑誌
査読	査読あり
標題	Kaon–baryon coupling schemes and kaon condensation in hyperon-mixed matter
執筆形態	共著
掲載誌名	Progress of Theoretical and Experimental Physics
掲載区分	国外
出版社・発行元	Physical Society of Japan
巻・号・頁	2022(9),pp.093D03-1-093D03-37
総ページ数	37
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	Possible coexistence of kaon condensation and hyperons in highly dense matter [the ($Y+K$) phase] is investigated on the basis of the relativistic mean-field theory combined with the effective chiral Lagrangian. Two coupling schemes for the $s$-wave kaon-baryon interaction are compared regarding the onset density of kaon condensation in the hyperon-mixed matter and equation of state for the developed ($Y+K$) phase: One is the contact interaction scheme related to the nonlinear effective chiral Lagrangian. The other is the meson-exchange scheme, where the interaction vertices between the kaon field and baryons are described by exchange of mesons ($¥sigma$, $¥sigma^¥ast$ mesons for scalar coupling, and $¥omega$, $¥rho$, $¥phi$ mesons for vector coupling).