Published April 1, 1992
| Version v1
Journal article
Approaching low-energy QCD with a gauged, nonlocal, constituent-quark model
Creators
- 1. Department of Physics, University of Toronto, Toronto, Ontario, M5S1A7 (Canada)
Description
We study the minimal constituent-quark model with momentum-dependent quark mass in the presence of SU(3)xSU(3) external gauge fields Vμ(x), Aμ(x), S(x), and P(x). The model generates vertex functions, for any number of external fields and pseudo Goldstone bosons coupling to quarks, saturating the Ward-Takahashi identities of QCD. Parameters in the O(p4) chiral Lagrangian are expressed in terms of the quark mass function Σ(p) and are surprisingly consistent with low-energy QCD. By use of the auxiliary-field method we discuss the relation of the model to the improved ladder approximation in QCD
Additional details
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 45
- Journal Issue
- 7
- Journal Page Range
- p. 2534-2541.
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 24020333
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CHIRAL SYMMETRY; COUPLING; GAUGE INVARIANCE; GOLDSTONE BOSONS; GREEN FUNCTION; LADDER APPROXIMATION; LAGRANGIAN FUNCTION; MASS; NONLOCAL POTENTIAL; QUANTUM CHROMODYNAMICS; QUARK MODEL; SIGMA MODEL; SU-3 GROUPS; SYMMETRY BREAKING; VERTEX FUNCTIONS; WARD IDENTITY
- Descriptors DEC
- BOSON-EXCHANGE MODELS; BOSONS; COMPOSITE MODELS; ELEMENTARY PARTICLES; FIELD THEORIES; FUNCTIONS; INVARIANCE PRINCIPLES; LIE GROUPS; MATHEMATICAL MODELS; PARTICLE MODELS; PERIPHERAL MODELS; POSTULATED PARTICLES; POTENTIALS; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY; SYMMETRY GROUPS