scholarly journals Gauge invariance and effective actions inD=3at finite temperature

1998 ◽  
Vol 57 (2) ◽  
pp. 1171-1177 ◽  
Author(s):  
I. J. R. Aitchison ◽  
C. D. Fosco
Keyword(s):  
Gauge Invariance ◽  
Finite Temperature

PHASE TRANSITIONS IN THE ABELIAN HIGGS MODEL AT FINITE DENSITIES

1991 ◽  
Vol 06 (23) ◽  
pp. 4063-4076 ◽  
Author(s):  
V.J. PETER ◽  
M. SABIR
Keyword(s):  
Phase Transitions ◽  
Density Dependence ◽  
Gauge Invariance ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Higgs Model ◽  
Coupling Constants ◽  
Abelian Higgs Model ◽  
Multiple Phase ◽  
The One

We study the U(1)-invariant Abelian Higgs model at a finite temperature and a finite chemical potential, at the one-loop level of approximation, and show the existence of chemical-potential-induced multiple-phase transitions at finite temperatures. The temperature and density dependence of the coupling constants is also analyzed. The gauge invariance of the results obtained is demonstrated.

GAUGE INDEPENDENCE OF THE HOT A0-CONDENSATE

1992 ◽  
Vol 07 (31) ◽  
pp. 2895-2903 ◽  
Author(s):  
V. V. SKALOZUB
Keyword(s):  
Gauge Field ◽  
Effective Action ◽  
Gauge Invariance ◽  
Finite Temperature ◽  
Field Component ◽  
Gauge Dependence

The problem of gauge dependence of the zero gauge field component condensate, A0 = const ., in the framework of finite temperature SU(2) gluodynamics is investigated. In straightforward calculations it is shown that the two-loop effective action W (A0, ξ) satisfies the generalized Nielsen identity. Thus, the gauge invariance of the A0-condensation is proved.

QUANTUM GRAVITY AT FINITE TEMPERATURE

1988 ◽  
Vol 03 (07) ◽  
pp. 667-672
Author(s):  
A.E.I. JOHANSSON ◽  
G. PERESSUTTI ◽  
B.-S. SKAGERSTAM
Keyword(s):  
Effective Mass ◽  
Effective Temperature ◽  
Gauge Invariance ◽  
Finite Temperature ◽  
Gauge Theories ◽  
Temperature Dependent ◽  
Self Energy ◽  
The One ◽  
Dependent Mass ◽  
Increasing Function

Self-energy corrections induced by the presence of thermal gravitons are computed at the one-loop level. It is found that thermal gravitons lead to a decreasing, effective temperature-dependent mass contrary to the situation in ordinary gauge theories where the effective mass is an increasing function of the temperature. It is argued that for 4πT2 larger then [Formula: see text], massive modes in the system are damped out in time or they cause instabilities. We also verify that the temperature-dependent effective mass satisfies Weinberg’s on-shell gauge invariance.

scholarly journals Gauge invariance and finite temperature effective actions of Chern-Simons gauge theories with fermions

1996 ◽  
Vol 383 (4) ◽  
pp. 434-438 ◽  
Author(s):  
Daniel Cabra ◽  
Eduardo Fradkin ◽  
Gerardo L. Rossini ◽  
Fidel A. Schaposnik
Keyword(s):  
Gauge Invariance ◽  
Finite Temperature ◽  
Gauge Theories ◽  
Chern Simons
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