Multi Particle Semiclassical Process in \PHI^4 Theory
arXiv:hep-ph/9306202 · doi:10.1016/0370-2693(93)90331-B
Abstract
We have shown an example of semiclassical transition in ϕ^4 model with positive coupling constant. This process describes a semiclassical transition between two coherent states with much smaller average number of particles in the initial state than in the final state. This transition is technically analogous to the one-instanton transition in the electroweak model. It is suppressed by the factor exp(-2S), where S is Lipatov instanton action. It could be important to the problem of calculation of amplitudes for multiparticle production in ϕ^4-type models.
12 pages, PlainTeX, JHU-TIPAC-930016