Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-10-27
Class.Quant.Grav. 15 (1998) 735-748
Physics
High Energy Physics
High Energy Physics - Theory
20 pages, LaTeX, 6 .ps-figures, Final version published in "Classical and Quantum Gravity"
Scientific paper
10.1088/0264-9381/15/4/003
An investigation of the Nambu-Jona-Lasino model with external constant electric and weak gravitational fields is carried out in three- and four- dimensional spacetimes. The effective potential of the composite bifermionic fields is calculated keeping terms linear in the curvature, while the electric field effect is treated exactly by means of the proper- time formalism. A rich dynamical symmetry breaking pattern, accompanied by phase transitions which are ruled, independently, by both the curvature and the electric field strength is found. Numerical simulations of the transitions are presented.
Chitov V. V.
Elizalde Emilio
Shil'nov Yu. I.
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