Dashen, Roger F. ; Ma, Shang-Keng ; Rajaraman, R. (1975) Finite-temperature behavior of a relativistic field theory with dynamical symmetry breaking Physical Review D - Particles, Fields, Gravitation and Cosmology, 11 (6). pp. 1499-1508. ISSN 1550-7998
Full text not available from this repository.
Official URL: http://prd.aps.org/abstract/PRD/v11/i6/p1499_1
Related URL: http://dx.doi.org/10.1103/PhysRevD.11.1499
Abstract
Recently, Gross and Neveu have studied a two-dimensional field theory of an N-component fermion in the large-N limit. This theory is asymptotically free and has dynamical spontaneous symmetry breaking. In this paper we study certain finite-temperature properties of this theory, especially those related to the survival of the "condensate," or symmetry breaking. Within the mean-field approximation, we find that the symmetry breaking disappears at a finite temperature T0, which is of the same order of magnitude as the physical mass of a fermion. However, the mean-field approximation is not good for any finite N. At any nonzero temperature, however small, the system prefers to be in space-dependent field configurations such that the condensate vanishes. The critical temperature is thus zero.
Item Type: | Article |
---|---|
Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 56088 |
Deposited On: | 22 Aug 2011 12:43 |
Last Modified: | 22 Aug 2011 12:43 |
Repository Staff Only: item control page