Phase structure of four-fermion theories at finite temperature and chemical potential in arbitrary dimensions

International journal of modern physics. A Volume 10 Page 2241-2268 published_at 1995
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Title ( eng )
Phase structure of four-fermion theories at finite temperature and chemical potential in arbitrary dimensions
Creator
Kouno T.
Muta Taizo
Source Title
International journal of modern physics. A
Volume 10
Start Page 2241
End Page 2268
Abstract
The phase structure of four-fermion theories is thoroughly investigated with varying temperature and chemical potential for arbitrary space-time dimensions (2 ≤ D < 4) by using the 1/N expansion method. It is shown that the chiral symmetry is restored in the theory under consideration for sufficiently high temperature and/or chemical potential. The critical line dividing the symmetric and broken phase is given explicitly. It is found that for space-time dimension 2 ≤ D < 3 both the first-order and second-order phase transition occur depending on the value of temperature and chemical potential while for 3 ≤ D < 4 only the second-order phase transition exists.
NDC
Physics [ 420 ]
Language
eng
Resource Type journal article
Publisher
World Scientific
Date of Issued 1995
Rights
Copyright (c) 1995 World Scientific
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 0217-751X
[URI] http://worldscinet.lib.tsinghua.edu.cn/openurl.asp?genre=journal&issn=0217-751X isVersionOf