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Symmetry behavior at finite temperature

Dolan, L., Jackiw, R.·1974·Physical Review D

Abstract

Spontaneous symmetry breaking at finite temperature is studied. We show that for the class of theories discussed, symmetry is restored above a critical temperature ${{\ensuremath{\beta}}_{c}}^{\ensuremath{-}1}$. We determine ${\ensuremath{\beta}}_{c}$ by a functional-diagrammatic evaluation of the effective potential and the effective mass. A formula for ${\ensuremath{\beta}}_{c}$ is obtained in terms of the renormalized parameters of the theory. By examining a large subset of graphs, we show that the formula is accurate for weak coupling. An approximate gap equation is derived whose solutions describe the theory near the critical point. For gauge theories, special attention is given to ensure gauge invariance of physical quantities. When symmetry is violated dynamically, it is argued that no critical point exists.

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Authors
Dolan, L., & Jackiw, R.
Venue
Physical Review D
Published
1974-06-15
Volume
9
Issue
12
Pages
3320-3341
ISSN
0556-2821 (ISSN-L)
OpenAlex
W2034224352
Cited by
2,123
References
0
FWCI
20.11
Type
journal article
Language
en
Open access
closed

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