Modifying the Skyrme model : pion mass and higher derivatives

We examine two ways of generalizing the Skyrme model. The first one involves the treatment of a chiral-symmetry-breaking term which is added to the Skyrme Lagrangian to account for the pion mass. Several nonequivalent terms are constructed and compared. The Skyrme model is also analyzed with respect...

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Veröffentlicht in:	Physical review. D, Particles and fields Particles and fields, 1991-02, Vol.43 (3), p.885-890
1. Verfasser:	MARLEAU, L
Format:	Artikel
Sprache:	eng
Schlagworte:	645204 - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions & Properties 645400 - High Energy Physics- Field Theory BARYON-BARYON INTERACTIONS BOSONS BOUNDARY CONDITIONS CHIRAL SYMMETRY Classical and quantum physics: mechanics and fields ELEMENTARY PARTICLES Exact sciences and technology FIELD THEORIES FUNCTIONS HADRON-HADRON INTERACTIONS HADRONS INTERACTIONS LAGRANGIAN FUNCTION LIE GROUPS MASS MATHEMATICAL MODELS MESONS NUCLEON-NUCLEON INTERACTIONS PARTICLE INTERACTIONS PARTICLE MODELS Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS PSEUDOSCALAR MESONS QUANTUM CHROMODYNAMICS QUANTUM FIELD THEORY QUASI PARTICLES SIGMA MODEL SOLITONS SU GROUPS SU-2 GROUPS SYMMETRY SYMMETRY BREAKING SYMMETRY GROUPS
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Zusammenfassung:	We examine two ways of generalizing the Skyrme model. The first one involves the treatment of a chiral-symmetry-breaking term which is added to the Skyrme Lagrangian to account for the pion mass. Several nonequivalent terms are constructed and compared. The Skyrme model is also analyzed with respect to higher-order terms in the derivative of the pion fields. We examine a model which exhibits all the good features of an effective theory of mesons.
ISSN:	0556-2821 1089-4918
DOI:	10.1103/PhysRevD.43.885