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	2014
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	Coexistence of Antikaons and Hyperons in Nuclei and in Neutron Stars
執筆形態	共著
掲載誌名	JPS Conference Proceedings (The 12th Asia Pacific Physics Conference)
掲載区分	国外
出版社・発行元	The Physical Society of Japan
巻・号・頁	1,pp.013081-1-013081-4
著者・共著者	Takumi Muto, Toshiki Maruyama, Toshitaka Tatsumi
概要	Multi-strangeness system consisting of K^- mesons and baryon is investigated in a unified way for both nuclei and neutron-star matter, based on the relativistic mean-field theory for baryon-baryon interaction, coupled with the effective chiral Lagrangian incorporating K^- baryon and nonlinear K^-K^- interactions. It is shown that the ground state of the multi-strangeness nuclei is given by multi-hypernuclei without bound K^- mesons for moderate K^- optical potential depths. In neutron-star matter, coexistence of kaon condensation and hyperons is plausible, but leads to significant softening of the equation of state, which should be reconciled with recent neutron-star observations.