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ID 19262
file
creator
Ishikawa, Ken-ichi
abstract
We investigate the thermal and curvature effects to dynamical symmetry breaking in a four-fermion model. The effective potential is evaluated in the leading order of the 1/N expansion at finite temperature on positive curvature space R⊗SD-1 or on negative curvature space R⊗HD-1 with varying temperature and curvature. We argue the combined effects of the temperature and curvature to the phase structure. The broken chiral symmetry is restored for a sufficiently high temperature and/or large positive curvature. The negative curvature enhances the chiral symmetry breaking. It is found that the thermal effect restores the symmetry at high temperature even in negative curvature spacetime.
journal title
Physical Review D
volume
Volume 56
issue
Issue 8
start page
5097
end page
5107
date of issued
1997-10-15
publisher
American Physical Society
issn
1550-7998
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 1997 The American Physical Society.
relation url
department
Graduate School of Science