Non-Abelian gauge invariance and the infrared approximation

Journal Article · Mon Feb 15 00:00:00 EST 1988 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.37.960· OSTI ID:5644084

Cho, H h; Fried, H M; Grandou, T

Two constructions are given of infrared approximations, defined by a nonlocal configuration-space restrictions, which preserve the local, non-Abelian gauge invariance of SU(N) two-dimensional QCD (QCD/sub 2/). These continuum infrared methods are used to estimate the quenched order parameter in the strong-coupling, or chiral, limit and are compared to a previous calculation where gauge invariance was not manifest. Both constructions provide results which, in the chiral limit, differ from each other and from the previous estimation by an inessential, multiplicative scaling factor.

• Research Organization: Physique Theorique, Universite de Nice, Physique Theorique, Parc Valrose, 06034 Nice Cedex, France
• OSTI ID: 5644084
• Journal Information: Phys. Rev. D; (United States), Vol. 37:4
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
QUANTUM CHROMODYNAMICS
GAUGE INVARIANCE
INFRARED DIVERGENCES
CHIRAL SYMMETRY
EUCLIDEAN SPACE
FERMIONS
PROPAGATOR
QUANTUM ELECTRODYNAMICS
SCALING LAWS
STRONG-COUPLING MODEL
SU GROUPS
TWO-DIMENSIONAL CALCULATIONS
ELECTRODYNAMICS
FIELD THEORIES
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICAL SPACE
PARTICLE MODELS
QUANTUM FIELD THEORY
RIEMANN SPACE
SPACE
SYMMETRY
SYMMETRY GROUPS
645400* - High Energy Physics- Field Theory
645300 - High Energy Physics- Particle Invariance Principles & Symmetries