scholarly journals Gauge coupling instability and dynamical mass generation in N=1 three-dimensional supersymmetric QED

1999 ◽  
Vol 60 (8) ◽  
Author(s):  
A. Campbell-Smith ◽  
N. E. Mavromatos ◽  
J. Papavassiliou
Keyword(s):  
Three Dimensional ◽  
Gauge Coupling ◽  
Mass Generation ◽  
Dynamical Mass ◽  
Dynamical Mass Generation

scholarly journals DYNAMICAL MASS GENERATION AND CRITICAL CURVATURE IN THE O(N) NONLINEAR SIGMA MODEL

1996 ◽  
Vol 11 (19) ◽  
pp. 1569-1578
Author(s):  
DAE-YUP SONG
Keyword(s):  
Sigma Model ◽  
Three Dimensional ◽  
Nonlinear Sigma Model ◽  
Mass Generation ◽  
Dynamical Mass ◽  
Large N ◽  
Static Einstein Universe ◽  
Critical Curvature ◽  
Second Order Phase Transition ◽  
Dynamical Mass Generation

The large-N nonlinear O(N) sigma model with the curvature coupled term ξRn2 is examined on a spacetime of R1×S2 topology (three-dimensional static Einstein universe). Making use of the cutoff method, we find the renormalized effective potential which shows that, for ξ>1/8, there is a second-order phase transition. Above the critical curvature, the dynamical mass generation does not take place even in the strong-coupled regime. The phase structure of the model on S2 is also discussed.

SCHWINGER MECHANISM AND STABILITY OF GAUGE SYMMETRY

1987 ◽  
Vol 02 (07) ◽  
pp. 525-529 ◽  
Author(s):  
MARCO FABBRICHESI
Keyword(s):  
Gauge Symmetry ◽  
Mass Generation ◽  
Simple Argument ◽  
Dynamical Mass ◽  
Abelian Field ◽  
Schwinger Mechanism ◽  
Dynamical Mass Generation

The Schwinger mechanism for dynamical mass generation in a SU (N) non-Abelian field is considered. A simple argument is given to prove the impossibility of such a mechanism.

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