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	2018/02
形態種別	国際会議プロシーディングス
査読	査読あり
標題	Equation of State with Kaon Condensation and Hyperons in Dense Matter
執筆形態	共著
掲載誌名	JPS Conference Proceedings (Proceedings of the International Workshop on Quarks and Compact Stars)
掲載区分	国外
出版社・発行元	Japan Physical Society
巻・号・頁	20,pp.011038-1-011038-5
著者・共著者	Takumi Muto, Toshiki Maruyama, Toshitaka Tatsumi, and Tatsuyuki Takatsuka
概要	Possible coexistent phase of kaon condensation and hyperons [the (Y+K) phase] in highly dense matter is investigated on the basis of the effective chiral Lagrangian, where the nonlinear kaon field couples with baryons through contact interaction vertices, combined with the relativistic mean-field (RMF) theory. The universal three-body repulsive force, which is constructed by the string-junction model, is introduced in order to make the equation of state (EOS) including the (Y+K) phase stiff enough to be consistent with recent observations of massive neutron stars. The resulting stiff EOS implies that the (Y+K) phase appears only for neutron stars near the maximum mass.