Published December 15, 1993
| Version v1
Journal article
Sphaleron barrier in the presence of fermions
Creators
- 1. Fachbereich Physik, Universitaet Oldenburg, Postfach 2503, D-26111 Oldenburg (Germany)
- 2. Instituut voor Theoretische Fysica, Rijksuniversiteit te Utrecht, NL-3508 TA Utrecht (Netherlands)
Description
We calculate the minimal energy path over the sphaleron barrier in the presence of fermions, assuming that the fermions of a doublet are degenerate in mass. This allows for spherically symmetric Ansa$iuml---tze for the fields, when the mixing angle dependence is neglected. While light fermions have little influence on the barrier, the presence of heavy fermions (MF∼1 TeV) strongly deforms the barrier, giving rise to additional sphalerons for very heavy fermions (MF∼10 TeV). Heavy fermions form nontopological solitons in the vacuum sector
Additional details
Publishing Information
- Journal Title
- Physical Review. D, Particles Fields
- Journal Volume
- 48
- Journal Issue
- 12
- Journal Page Range
- p. 5905-5916.
- ISSN
- 0556-2821
- CODEN
- PRVDAQ
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25023602
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BARYON NUMBER; ENERGY; FERMIONS; FIELD EQUATIONS; SOLITONS; STANDARD MODEL; VACUUM STATES; VIOLATIONS
- Descriptors DEC
- EQUATIONS; FIELD THEORIES; GRAND UNIFIED THEORY; MATHEMATICAL MODELS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUASI PARTICLES; UNIFIED GAUGE MODELS