Guida, R. and Konishi, K. and Magnoli, N. (1994) Level-Crossing in the Instanton-Anti-Instanton Valley. Physics letters. B , 333 . p. 104. ISSN 1873-2445
Full text not available from this repository.Abstract
We study the level crossing of the fermion system described by the euclidean Dirac Hamiltonian in the valley background. One chiral fermion level is shown to cross twice the zero value in the case of well-separated instanton-anti-instanton background. Below a critical separation, however, level crossings are absent. The phenomenon can be interpreted as the transition to a gauge field configuration of purely perturbative nature, below a critical instanton-anti-instanton separation. In the context of high-energy electroweak interactions, our findings seem to definitely invalidate some optimistic argument concerning the observability of baryon number violation based on the use of the optical theorem in conjunction with the valley fields.
Item Type: | Article |
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Additional Information: | Imported from arXiv |
Subjects: | Area02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici |
Divisions: | Dipartimenti (from 2013) > DIPARTIMENTO DI FISICA |
Depositing User: | dott.ssa Sandra Faita |
Date Deposited: | 11 Feb 2014 13:22 |
Last Modified: | 11 Feb 2014 13:22 |
URI: | http://eprints.adm.unipi.it/id/eprint/1652 |
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