Chiral phase transition in an extended NJL model with higher-order multi-quark interactions

Kouji Kashiwa, Hiroaki Kouno, Tomohiko Sakaguchi, Masayuki Matsuzaki, Masanobu Yahiro

研究成果: Contribution to journalArticle査読

63 被引用数 (Scopus)

抄録

The chiral phase transition is studied in an extended Nambu-Jona-Lasinio model with eight-quark interactions. Equations for scalar and vector quark densities, derived in the mean field approximation, are nonlinear and mutually coupled. The scalar type nonlinear term hastens the restoration of chiral symmetry, while the scalar-vector mixing term makes the transition sharper. The scalar type nonlinear term shifts the critical endpoint toward the values predicted by lattice QCD simulations and the QCD-like theory.

本文言語英語
ページ(範囲)446-451
ページ数6
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
647
5-6
DOI
出版ステータス出版済み - 4 19 2007

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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