Bound states from instantons
Journal Article
·
· Phys. Rev., D; (United States)
The pseudoparticle solutions of non-Abelian gauge theories can generate a mass for fermions coupled to the gauge fields. The SU(N) x SU(N) chiral symmetry of a model with N species of massless fermions is spontaneously broken by this effect, and N/sup 2/-1 Goldstone bosons are consequently formed as bound states of fermion-antifermion pairs. We demonstrate these facts explicitly in models with one or two species of fermions. The mechanism by which the fermions acquire a mass is such that the symmetries P and T are conserved even in the presence of pseudoparticles.
- Research Organization:
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260
- OSTI ID:
- 6778352
- Journal Information:
- Phys. Rev., D; (United States), Journal Name: Phys. Rev., D; (United States) Vol. 17:12; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
BOUND STATE
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
CURRENTS
ELEMENTARY PARTICLES
FERMIONS
GAUGE INVARIANCE
GOLDSTONE BOSONS
HADRONS
INSTANTONS
INVARIANCE PRINCIPLES
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
POSTULATED PARTICLES
PROPAGATOR
PSEUDOSCALAR MESONS
QUARK MODEL
QUASI PARTICLES
SU GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGEBRAIC CURRENTS
AXIAL-VECTOR CURRENTS
BOSONS
BOUND STATE
CHIRAL SYMMETRY
COLOR MODEL
COMPOSITE MODELS
CURRENTS
ELEMENTARY PARTICLES
FERMIONS
GAUGE INVARIANCE
GOLDSTONE BOSONS
HADRONS
INSTANTONS
INVARIANCE PRINCIPLES
LIE GROUPS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
PARTICLE MODELS
POSTULATED PARTICLES
PROPAGATOR
PSEUDOSCALAR MESONS
QUARK MODEL
QUASI PARTICLES
SU GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS