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1992 (EN)
Topography of the hot sphaleron transitions (EN)

Ambjorn, J (EN)
Farakos, K (EN)

N/A (EN)

By numerical simulations in real time we provide evidence in favour of sphaleron-like transitions in the hot, symmetric phase of the electroweak theory. Earlier performed observations of a change in the Chern-Simons number are supplemented with a measurement of the lowest eigenvalues of the three-dimensional staggered fermion Dirac operator and observations of the spatial extension of energy lumps associated with the transition. The observations corroborate on the interpretation of the change in Chern-Simons numbers as representing continuum physics, not lattice artifacts. By combining the various observations it is possible to follow in considerable detail the time-history of thermal fluctuations of the classical gauge-field configurations responsible for the change in the Chern-Simons number. (EN)

journalArticle

TOPOLOGY (EN)
SU(2) LATTICE VACUUM (EN)
BARYON ASYMMETRY (EN)
TEMPERATURE (EN)
ANOMALIES (EN)
NUMBER NON-CONSERVATION (EN)
WEINBERG-SALAM THEORY (EN)
UNIVERSE (EN)
ELECTROWEAK THEORY (EN)
VIOLATION (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics (EN)

English

1992


ELSEVIER SCIENCE BV (EN)



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