Metastability of solitons in a generalized Skyrme model
We consider soliton solutions in the generalized chirally symmetric Skyrme model which includes, in addition to the usual commutator term, a symmetric term of fourth order in the field derivatives. The classical energy of static hedgehog field configurations is determined numerically as a function of the angle characterizing the relative contribution of these two terms. Next to the Skyrme combination, we find a region where numerical solutions either are metastable (due to the energy being unbounded from below) or do not exist at all. We also study the exact quantization of the isorotational collective coordinates. Our conclusion is that, demanding consistency with meson phenomenology for the signs of the parameters, the model discussed in this paper can lead to reliable physical results only for small deviations from Skyrme's original stabilizing term.
- Research Organization:
- Physikalisches Institut der Universitaet Bonn, Nussallee 12, D-5300 Bonn 1, West Germany
- OSTI ID:
- 6005918
- Journal Information:
- Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 33:8; ISSN PRVDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
EQUATIONS
FIELD EQUATIONS
FIELD THEORIES
LAGRANGIAN FIELD THEORY
LIE GROUPS
NUCLEON-NUCLEON POTENTIAL
POTENTIALS
QUANTIZATION
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUASI PARTICLES
SKYRME POTENTIAL
SOLITONS
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SUPERSYMMETRY
SYMMETRY
SYMMETRY GROUPS