scholarly journals Finite temperature ordering in the three-dimensional gauge glass

2000 ◽  
Vol 61 (18) ◽  
pp. 12467-12473 ◽  
Author(s):  
T. Olson ◽  
A. P. Young
Keyword(s):  
Finite Temperature ◽  
Three Dimensional ◽  
Gauge Glass

scholarly journals Three-dimensional finite temperature gauge theory in the confined region and the string picture

2010 ◽  
Vol 836 (1-2) ◽  
pp. 91-99 ◽  
Author(s):  
P. Bialas ◽  
L. Daniel ◽  
A. Morel ◽  
B. Petersson
Keyword(s):  
Gauge Theory ◽  
Finite Temperature ◽  
Three Dimensional

scholarly journals CRITICAL TEMPERATURE AND AMPLITUDE RATIOS FROM A FINITE TEMPERATURE RENORMALIZATION GROUP

1995 ◽  
Vol 10 (23) ◽  
pp. 3343-3358 ◽  
Author(s):  
M.A. VAN EIJCK ◽  
DENJOE O’CONNOR ◽  
C.R. STEPHENS
Keyword(s):  
Renormalization Group ◽  
Critical Temperature ◽  
Finite Temperature ◽  
Flow Parameter ◽  
Three Dimensional ◽  
Zero Temperature ◽  
Amplitude Ratios ◽  
Flow Equations ◽  
Infrared Divergences ◽  
Good Agreement

We study λφ4 theory using an environmentally friendly finite temperature renormalization group. We derive flow equations, using a fiducial temperature as flow parameter, develop them perturbatively in an expansion free from ultraviolet and infrared divergences, then integrate them numerically from zero to temperatures above the critical temperature. The critical temperature, at which the mass vanishes, is obtained by integrating the flow equations, and is determined as a function of the zero temperature mass and coupling. We calculate the field expectation value and the minimum of the effective potential as functions of temperature and derive some universal amplitude ratios which connect the broken and symmetric phases of the theory. The latter are found to be in good agreement with those of the three-dimensional Ising model obtained from high and low temperature series expansions.

scholarly journals THE COMPOSITE OPERATOR (CJT) FORMALISM IN THE (λφ4 + ηφ6)D=3 MODEL AT FINITE TEMPERATURE

2000 ◽  
Vol 15 (37) ◽  
pp. 2235-2244 ◽  
Author(s):  
G. N. J. AÑAÑOS ◽  
N. F. SVAITER
Keyword(s):  
High Temperature ◽  
Finite Temperature ◽  
Tricritical Point ◽  
Three Dimensional ◽  
Composite Operator ◽  
Large Set ◽  
Thermal Coupling ◽  
Coupling Constant ◽  
Feynman Graphs ◽  
Cjt Formalism

We discuss the three-dimensional λφ4+ηφ6 theory in the context of the 1/N expansion at finite temperature. We use the method of the composite operator (CJT) for summing a large set of Feynman graphs. We analyze the behavior of the thermal square mass and the thermal coupling constant in the low and high temperature limits. The existence of the tricritical point at some temperature is found using this method.

Sign in / Sign up

Export Citation Format

Share Document