  We have shown an example of semiclassical transition in \phi^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 \phi^4-type models.
