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Gaussian approximation of the Gross-Neveu model in the functional Schrödinger picture

Title
Gaussian approximation of the Gross-Neveu model in the functional Schrödinger picture
Authors
Kim S.K.Yang J.Soh K.S.Yee J.H.
Ewha Authors
김성구양종만
SCOPUS Author ID
김성구scopusscopus; 양종만scopus
Issue Date
1989
Journal Title
Physical Review D
ISSN
0556-2821JCR Link
Citation
vol. 40, no. 8, pp. 2647 - 2653
Indexed
SCOPUS scopus
Abstract
The Gross-Neveu model is analyzed by the Gaussian approximation in the functional Schrödinger picture. It is shown that in the large-N limit the Gaussian approximation exactly reproduces the Gross-Neveu results, but for finite N it contains more information than the large-N approximation. There are two nontrivial phases of the theory depending upon the sign of the infinitesimal bare coupling constant. Dynamical symmetry breaking occurs in one of the phases. We also apply our analysis to the chiral Gross-Neveu model. © 1989 The American Physical Society.
DOI
10.1103/PhysRevD.40.2647
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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