Determination of QCD phase diagram from the imaginary chemical potential region

Yuji Sakai, Kouji Kashiwa, Hiroaki Kouno, Masayuki Matsuzaki, Masanobu Yahiro

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Abstract

We test the reliability of the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model, comparing the model result with the lattice data at nonzero imaginary chemical potential. The PNJL model with the vector-type four-quark and scalar-type eight-quark interactions reproduces the lattice data on the pseudocritical temperatures of the deconfinement and chiral phase transitions. The QCD phase diagram in the real chemical potential region is predicted by the PNJL model. The critical end point survives, even if the vector-type four-quark interaction is taken into account.

Original languageEnglish
Article number096001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number9
DOIs
Publication statusPublished - May 1 2009

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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