Critical endpoint in the Polyakov-loop extended NJL model

Kouji Kashiwa, Hiroaki Kouno, Masayuki Matsuzaki, Masanobu Yahiro

Research output: Contribution to journalArticlepeer-review

119 Citations (Scopus)

Abstract

The critical endpoint (CEP) and the phase structure are studied in the Polyakov-loop extended Nambu-Jona-Lasinio model in which the scalar type eight-quark (σ4) interaction and the vector type four-quark interaction are newly added. The σ4 interaction largely shifts the CEP toward higher temperature and lower chemical potential, while the vector type interaction does oppositely. At zero chemical potential, the σ4 interaction moves the pseudo-critical temperature of the chiral phase transition to the vicinity of that of the deconfinement phase transition.

Original languageEnglish
Pages (from-to)26-32
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume662
Issue number1
DOIs
Publication statusPublished - Apr 10 2008

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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