Competing mechanisms of chiral symmetry breaking in a generalized Gross-Neveu model
Journal Article
·
· Physical Review. D, Particles Fields
- Institut fuer Theoretische Physik III, Universitaet Erlangen-Nuernberg, D-91058 Erlangen (Germany)
Chiral symmetry of the 2-dimensional chiral Gross-Neveu model is broken explicitly by a bare mass term as well as a splitting of scalar and pseudoscalar coupling constants. The vacuum and light hadrons--mesons and baryons which become massless in the chiral limit--are explored analytically in leading order of the derivative expansion by means of a double sine-Gordon equation. Depending on the parameters, this model features new phenomena as compared to previously investigated 4-fermion models: spontaneous breaking of parity, a nontrivial chiral vacuum angle, twisted kinklike baryons whose baryon number reflects the vacuum angle, crystals with alternating baryons, and appearance of a false vacuum.
- OSTI ID:
- 21409783
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 81, Issue 10; Other Information: DOI: 10.1103/PhysRevD.81.105027; (c) 2010 The American Physical Society; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
BARYONS
CHIRAL SYMMETRY
CHIRALITY
COUPLING CONSTANTS
EXPANSION
LAGRANGIAN FIELD THEORY
MASS
MESONS
PARITY
SIMULATION
SINE-GORDON EQUATION
SYMMETRY BREAKING
TWO-DIMENSIONAL CALCULATIONS
BOSONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD EQUATIONS
FIELD THEORIES
HADRONS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
SYMMETRY
BARYON NUMBER
BARYONS
CHIRAL SYMMETRY
CHIRALITY
COUPLING CONSTANTS
EXPANSION
LAGRANGIAN FIELD THEORY
MASS
MESONS
PARITY
SIMULATION
SINE-GORDON EQUATION
SYMMETRY BREAKING
TWO-DIMENSIONAL CALCULATIONS
BOSONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FIELD EQUATIONS
FIELD THEORIES
HADRONS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
SYMMETRY