Periodic instanton bifurcations and thermal transition rate
Abstract
It is shown that periodic instanton solutions may have bifurcations which qualitatively change the behaviour of the finite temperature transition rate. These bifurcations are studied numerically in a quantum mechanical model and in the massive twodimensional sigma model with the Skyrme term. General rules which determine the behaviour of periodic instantons near bifurcations are derived and applied to the Electroweak Theory.
 Publication:

Physics Letters B
 Pub Date:
 February 1997
 DOI:
 10.1016/S03702693(97)00628X
 arXiv:
 arXiv:hepph/9704242
 Bibcode:
 1997PhLB..406...76K
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 11 pages, LaTeX, axodraw.sty