1995/11/04 by V. A. Rubakov, Rubakov, V. A.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9511236
14 pages, LaTeX; to appear in Proceedings of 2nd Rencontres du Vietnam, October 1995
arxiv created 1995/11/04 · arxiv updated 2009/11/30
Processes with multiparticle final states in weakly coupled theories, both with and without instantons, cannot be studied perturbatively at most interesting energies and multiplicities. Semiclassical approaches to the calculation of their cross sections are reviewed.