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Quark confinement and long-range gauge fields in quantum chromodynamics

Journal Article · · Phys. Rev., D; (United States)
The influence of long-range gauge fields on the quark-antiquark static potential in the SU(2) Yang-Mills theory is discussed. The long-range fields considered are Wu-Yang monopole fields and superpositions of monopoles. The instantaneous Coulomb interaction, which is shown to be responsible for asymptotic freedom, is computed in a background monopole field. The effect of the background field produced by a superposition of monopoles is computed using the dilute-gas approximation. The resulting potential is attractive and infrared divergent. The infrared divergence may be an indication that long-range vacuum fields are the basis of quark confinement. It is argued that formation of a string of color-electric flux between the quarks lowers their energy relative to the instantaneous Coulomb energy.
Research Organization:
Physics Department, Indiana University, Bloomington, Indiana 47405
OSTI ID:
5389210
Journal Information:
Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 21:8; ISSN PRVDA
Country of Publication:
United States
Language:
English

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Related Subjects

645204* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
CLASSICAL MECHANICS
COLOR MODEL
COMPOSITE MODELS
COULOMB ENERGY
ENERGY
EXTENDED PARTICLE MODEL
FIELD THEORIES
GAUGE INVARIANCE
HAMILTONIANS
INFRARED DIVERGENCES
INTERACTIONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MECHANICS
MONOPOLES
PARTICLE INTERACTIONS
PARTICLE MODELS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM OPERATORS
QUARK MODEL
QUARK-ANTIQUARK INTERACTIONS
SEMICLASSICAL APPROXIMATION
STRING MODELS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
VACUUM STATES
YANG-MILLS THEORY