Periodic Instanton Bifurcations and Thermal Transition Rate

Details Periodic Instanton Bifurcations and Thermal Transition Rate Periodic Instanton Bifurcations and Thermal Transition Rate

1997-04-04

arxiv.org/abs/hep-ph/9704242v1

Phys.Lett. B406 (1997) 76-82

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, LaTeX, axodraw.sty

Scientific paper

10.1016/S0370-2693(97)00628-X

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 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 Electroweak Theory.

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