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1994 (EN)
Level crossing for hot sphalerons (EN)

Hands, S (EN)
Koutsoumbas, G (EN)
Ambjorn, J (EN)
Thorleifsson, G (EN)
Farakos, K (EN)

N/A (EN)

We study the spectrum of the Dirac hamiltonian in the presence of high-temperature sphaleron-like fluctuations of the electroweak gauge and Higgs fields, relevant for the conditions prevailing in the early universe. The fluctuations are created by numerical lattice simulations. It is shown that a change in Chem-Simons number by one unit is accompanied by eigenvalues crossing zero and a change of sip of the generalized chirality GAMMA5 = (-1)2T+1gamma5 which labels these modes. This provides further evidence that the sphaleron-like configurations observed in lattice simulations may be viewed as representing continuum configurations. (EN)

journalArticle

SU(2) LATTICE VACUUM (EN)
TOPOLOGICAL SUSCEPTIBILITY (EN)
ANOMALIES (EN)
HIGH-TEMPERATURE (EN)
MONOPOLES (EN)
DIMENSIONAL REDUCTION (EN)
chern simons (EN)
Spectrum (EN)
High Temperature (EN)
STAGGERED FERMIONS (EN)
GAUGE-THEORY (EN)
Early Universe (EN)
Eigenvalues (EN)
TRANSITIONS (EN)
SYMMETRY-BREAKING (EN)

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

Nuclear Physics B (EN)

1994


ELSEVIER SCIENCE BV (EN)



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