Theory and phenomenology of the Skyrme model

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1985

OSTI ID:6987661

Lizzi, F

The Skyrme model is described in some detail. The author starts with a brief discussion of solitons in general. He then shows that the chiral model, the theory of pions seen as the goldstone modes of the broken chiral symmetry, admists solitons. The solitons have baryon number and must be quantized as fermions for more than three flavors because of the chiral anomaly. They are identified with the usual baryons, proton, ..delta.. etc. A canonical quantization of the model is made in the collective coordinate approximation. The classical spectrum of the model is also investigated and shown to admit a dibaryon. This state is a flavor singlet and has been independently predicted in the quark model. Some arguments for the stability of this state against strong decay are given. It is also shown that (at least in the collective coordinate approximation) there are quantization ambiguities for any finite number of flavors. Using the results of the canonical quantization the masses of the Nucleon, ..delta.. and the dibaryon are investigated in the model. The introduction of quark masses and explicit chiral symmetry braking improves the phenomenology. Finally the relationship between the Skyrme model and QCD and some variations of the model are discussed.

• Research Organization: Syracuse Univ., NY (USA)
• OSTI ID: 6987661
• Country of Publication: United States
• Language: English

Related Subjects

645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
CHIRAL SYMMETRY
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MASS SPECTRA
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE MODELS
POSTULATED PARTICLES
QUANTIZATION
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
QUASI PARTICLES
SOLITONS
SPECTRA
SYMMETRY
SYMMETRY BREAKING