Singular Classical Solutions and Tree Multiparticle Cross Sections in Scalar Theories

Abstract

We consider the features of multiparticle tree cross sections in scalar theories in the framework of a semiclassical approach. These cross sections at large multiplicities have exponential form, and the properties of the exponent in different regimes are discussed.

Comments: 11 pages, one postcript figure; To appear in Proc. Xth Int. Workshop on high energy physics and quantum field theory, Zvenigorod, 1995