Dynamical Mass Generation in a Finite-Temperature Abelian Gauge Theory

Details Dynamical Mass Generation in a Finite-Temperature Abelian Gauge Theory Dynamical Mass Generation in a Finite-Temperature Abelian Gauge Theory

1998-01-08

arxiv.org/abs/hep-ph/9801245v2

Phys.Rev. D58 (1998) 065006

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 LaTeX pages, 4 postscript figures in a single file, version to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.58.065006

We write down the gap equation for the fermion self-energy in a finite-temperature abelian gauge theory in three dimensions. The instantaneous approximation is relaxed, momentum-dependent fermion and photon self-energies are considered, and the corresponding Schwinger-Dyson equation is solved numerically. The relation between the zero-momentum and zero-temperature fermion self-energy and the critical temperature T_c, above which there is no dynamical mass generation, is then studied. We also investigate the effect which the number of fermion flavours N_f has on the results, and we give the phase diagram of the theory with respect to T and N_f.

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