Meson loop effect on high density chiral phase transition

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We test the stability of the mean field solution in the Nambu-Jona-Lasinio model in a semi-quantitative manner. For stable solutions with respect to both the σ and π directions, we investigate effects of the mesonic loop corrections of 1/Nc, which correspond to the next-to-leading order in the 1/Nc expansion, on the high density chiral phase transition. The corrections weaken the first order phase transition and shift the critical chemical potential to a lower value. At Nc = 3, however, instability of the mean field effective potential prevents us from determining the minimum of the corrected one.

Original languageEnglish
Pages (from-to)116-121
Number of pages6
JournalCentral European Journal of Physics
Volume6
Issue number1
DOIs
Publication statusPublished - Mar 1 2008

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Sakaguchi, T., Kashiwa, K., Matsuzaki, M., Kouno, H., & Yahiro, M. (2008). Meson loop effect on high density chiral phase transition. Central European Journal of Physics, 6(1), 116-121. https://doi.org/10.2478/s11534-008-0006-4