Soliton bag models of hadrons from QCD
Several phenomenological models of hadrons are derived from quantum chromodynamics (QCD). Functional-integral methods are used to obtain an approximate bilocal-field representation of the QCD generating functional. The degenerate vacuum configurations of the action for the bilocal fields have a rich topological structure arising from the dynamically broken chiral symmetry. Restricting the bilocal-field fluctuations to those of local fields results in a local-field bosonization of QCD, from which we obtain values for several meson parameters. A nontopological-soliton ansatz for hadronic states leads to a generalized bag-model action which as special cases contains the chiral-bag-model action and the MIT-bag-model action. All parameters in these actions are calculable and in particular the MIT bag constant is calculated. This work extends our previous calculation of the bag constant.
- Research Organization:
- School of Physical Sciences, The Flinders University of South Australia, Bedford Park, South Australia 5042, Australia
- OSTI ID:
- 6336343
- Journal Information:
- Phys. Rev. D; (United States), Vol. 32:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HADRONS
BAG MODEL
QUANTUM CHROMODYNAMICS
BOSONS
CHIRAL SYMMETRY
COUPLING CONSTANTS
FUNCTIONAL MODELS
LAGRANGIAN FUNCTION
MASSLESS PARTICLES
METRICS
PCAC THEORY
QUARKS
SOLITONS
STRUCTURE FUNCTIONS
SYMMETRY BREAKING
VACUUM STATES
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FIELD THEORIES
FUNCTIONS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
QUARK MODEL
QUASI PARTICLES
SYMMETRY
645201* - High Energy Physics- Particle Interactions & Properties-Theoretical- General & Scattering Theory
645400 - High Energy Physics- Field Theory