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Journal
2008 | 6 | 1 | 116-121
Article title

Meson loop effect on high density chiral phase transition

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EN
Abstracts
EN
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/N
c, which correspond to the next-to-leading order in the 1/N
c 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 N
c = 3, however, instability of the mean field effective potential prevents us from determining the minimum of the corrected one.
Publisher

Journal
Year
Volume
6
Issue
1
Pages
116-121
Physical description
Dates
published
1 - 3 - 2008
online
26 - 3 - 2008
Contributors
  • Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka, 812-8581, Japan
author
  • Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka, 812-8581, Japan
author
  • Department of Physics, Saga University, Saga, 840-8502, Japan
  • Department of Physics, Graduate School of Sciences, Kyushu University, Fukuoka, 812-8581, Japan
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-008-0006-4
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