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Behavior in strong fields of Euclidean gauge theories

Journal Article · · Phys. Rev. D; (United States)
We represent the Green's functions and functional determinants in Euclidean gauge theories by means of the Feynman-Kac formula. Such a representation is useful in the investigation of the determinant as a functional of the gauge field. As a first application of these formulas we show (for the Abelian gauge field A) that ln det(-del/sub A/ /sup 2/+m/sup 2/)/sup -1/ = c ..integral..F/sup 2/lnF/sup 2/+r(partialF/sup 2/) in four dimensions, where c>0 and the remainder r(partialF/sup 2/) is bounded by a quadratic form of partial/sub rho/F/sub munu/. This behavior for large F is crucial for the stability of quantum models of gauge theories.
Research Organization:
University of Wroclaw, Institute of Theoretical Physics, 50-205 Wroclaw, Poland
OSTI ID:
6509664
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 26:12; ISSN PRVDA
Country of Publication:
United States
Language:
English