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	2016
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	Kaon Condensation in Hyperonic Matter and Equation of State
執筆形態	共著
掲載誌名	JPS Conference Proceedings (NIC-XIV Proceedings)
掲載区分	国外
出版社・発行元	The Physical Society of Japan
著者・共著者	Toshiki Maruyama, Toshitaka Tatsumi
概要	Kaon condensation in hyperon-mixed matter, which may be realized in neutron stars, is investigated on the basis of the relativistic mean-field theory for baryon-baryon interaction, combined with the effective chiral Lagrangian. We introduce the range terms for both nucleons and hyperons and a pole contribution from the $¥Lambda$ (1405) so as to reproduce the $S$-wave on-shell $KN$ scattering lengths.Onset density of kaon condensation in the hyperon-mixed matter and the equation of state (EOS) is obtained. It is shown that coexistence of kaon condensation and hyperon-mixed matter necessarily leads to significant softening of the EOS. We address stiffening effects to make the EOS consistent with recent observations of massive neutron stars.