Decoupling confinement and chiral-symmetry breaking: An explicit model

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.969· OSTI ID:7235296

Gross, F ^[1]; Milana, J ^[2]

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1. Department of Physics, College of William Mary, Williamsburg, Virginia 23185 (United States) Physics Division, Continuous Electron Beam Accelerator Facility, Newport News, Virginia 23606 (United States)
2. Department of Physics, College of William Mary, Williamsburg, Virginia 23185 (United States)

Using a covariant model of mesons developed previously, we obtain new numerical solutions for the light-quark sector, and show explicitly how the small mass of the pion emerges as a natural consequence of chiral-symmetry breaking. Then we generalize the model, and show how chiral-symmetry breaking and confinement could be realized through completely independent mechanisms with different mass scales. In particular, the confining potential can be chosen to be purely scalar, as suggested by lattice studies and phenomenology, and the remaining part of the interaction can be chosen to be chirally invariant. In a symmetry-breaking mode, this new model can still generate quark mass and a massless-pion bound state.

• DOE Contract Number: FG05-88ER40435
• OSTI ID: 7235296
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:3; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662120* -- General Theory of Particles & Fields-- Symmetry
Conservation Laws
Currents & Their Properties-- (1992-)
662230 -- Quantum Chromodynamics-- (1992-)
662420 -- Properties of Mesons & Meson Resonances-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
BOUND STATE
CHIRAL SYMMETRY
DECOUPLING
ELEMENTARY PARTICLES
ENERGY
FERMIONS
FIELD THEORIES
FUNCTIONS
GOLDSTONE BOSONS
HADRONS
MASS
MESONS
PIONS
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
QUARKS
SELF-ENERGY
SYMMETRY
SYMMETRY BREAKING
VERTEX FUNCTIONS