scholarly journals Finite temperature and density effect on symmetry breaking by Wilson loops

1987 ◽  
Vol 35 (1) ◽  
pp. 37-42 ◽  
Author(s):  
K. Shiraishi
Keyword(s):  
Symmetry Breaking ◽  
Finite Temperature ◽  
Density Effect ◽  
Wilson Loops

scholarly journals Degenerate fermion and Wilson loops in 1 + 1 dimensions

1990 ◽  
Vol 68 (4-5) ◽  
pp. 357-360
Author(s):  
Kiyoshi Shiraishi
Keyword(s):  
Phase Transition ◽  
Boundary Condition ◽  
Symmetry Breaking ◽  
Finite Temperature ◽  
Fermion Field ◽  
Wilson Loops ◽  
Finite Density ◽  
Gauge Symmetries ◽  
Antiperiodic Boundary Condition

We investigate the effect of finite fermion density on symmetry breaking by Wilson loops in (1 + 1) dimensions. We find the breaking and restoration of symmetry at finite density in models with SU(2) and SU(3) gauge symmetries, in the presence of the adjoint fermions. The transition can occur at a finite density of fermions, regardless of the periodic or antiperiodic boundary condition of the fermion field; this is in contrast to the finite-temperature case examined by Ho and Hosotani (IASSNS-HEP preprint 88/48) where the boundary condition of fractional twist is essential to the occurrence of the phase transition.

Symmetry breaking by Wilson loops. Finite-temperature effects

1989 ◽  
Vol 39 (8) ◽  
pp. 2368-2372 ◽  
Author(s):  
J. S. Dowker ◽  
S. P. Jadhav
Keyword(s):  
Symmetry Breaking ◽  
Finite Temperature ◽  
Temperature Effects ◽  
Wilson Loops

scholarly journals APPROACH TO D-DIMENSIONAL GROSS–NEVEU MODEL AT FINITE TEMPERATURE AND CURVATURE

1996 ◽  
Vol 11 (10) ◽  
pp. 785-793 ◽  
Author(s):  
SHINYA KANEMURA ◽  
HARU-TADA SATO
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Effective Potential ◽  
Finite Temperature ◽  
Phase Structure ◽  
Critical Line ◽  
Chiral Symmetry Breaking ◽  
Leading Order ◽  
Third Order ◽  
Gross Neveu Model

We discuss phase structure of chiral symmetry breaking of the D-dimensional (2≤D≤3) Gross–Neveu model at finite temperature, density and constant curvature. We evaluate the effective potential in a weak background approximation to thermalize the model as well as in the leading order of the 1/N-expansion. A third-order critical line is observed similarly to the D=2 case.

scholarly journals INVERSE AND SPONTANEOUS SUPERSYMMETRY BREAKING IN S1 × R3

2010 ◽  
Vol 25 (25) ◽  
pp. 4801-4826
Author(s):  
V. K. OIKONOMOU
Keyword(s):  
Symmetry Breaking ◽  
Supersymmetry Breaking ◽  
Finite Temperature ◽  
Space Time ◽  
Supersymmetric Model ◽  
Interaction Terms ◽  
Compact Dimension ◽  
Continuous Symmetries

In this paper, we study the influence of hard-supersymmetry-breaking terms in an N = 1, d = 4 supersymmetric model, with S1 × R3 space–time topology. It is found that for some interaction terms and for certain values of the couplings, supersymmetry is unbroken for small lengths of the compact radius and spontaneously breaks as the radius increases. Also, for another class of interaction terms, when the radius is large, supersymmetry is unbroken and spontaneously breaks as the radius decreases. It is pointed out that the two phenomena have similarities to the theory of metastable vacua at finite temperature, as well as to the inverse symmetry breaking of continuous symmetries at finite temperature (where the role of the temperature is played by the radius of the compact dimension).

MESONS AND DIQUARKS IN A NJL MODEL AT FINITE TEMPERATURE AND CHEMICAL POTENTIAL

1993 ◽  
Vol 08 (07) ◽  
pp. 1295-1312 ◽  
Author(s):  
D. EBERT ◽  
YU. L. KALINOVSKY ◽  
L. MÜNCHOW ◽  
M.K. VOLKOV
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Chiral Symmetry Breaking ◽  
Baryon Number ◽  
Coupling Constants ◽  
Number Density ◽  
Njl Model

An extended NJL model with [Formula: see text] and (qq)-interactions is studied at finite temperature and baryon number density. We investigate the chiral symmetry breaking, its restoration and the behavior of meson and diquark masses, decay and coupling constants as functions of T and µ.

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