PERIODIC INSTANTON BIFURCATIONS AND THERMAL TRANSITION RATE

Authors
KUZNETSOV AN TINYAKOV PG
Citation
An. Kuznetsov et Pg. Tinyakov, PERIODIC INSTANTON BIFURCATIONS AND THERMAL TRANSITION RATE, Physics letters. Section B, 406(1-2), 1997, pp. 76-82
Citations number
12
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
406
Issue
1-2
Year of publication
1997
Pages
76 - 82
Database
ISI
SICI code
0370-2693(1997)406:1-2<76:PIBATT>2.0.ZU;2-E
Abstract
It is shown that periodic instanton solutions may have bifurcations wh ich qualitatively change the behaviour of the finite temperature trans ition rate. These bifurcations are studied numerically in a quantum me chanical model and in the massive two-dimensional sigma model with the Skyrme term. General rules which determine the behaviour of periodic instantons near bifurcations are derived and applied to the Electrowea k Theory. (C) 1997 Published by Elsevier Science B.V.