2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/93535The new formulation of the theory of multichannel scattering on the example of collinear model is proposed. It is shown, that in the closed three-body scattering system the principle of quantum determinism in general case breaks down and we have a micro- irreversible quantum mechanics.4 pages, LaTeX, uses nolta.sty, accepted for presentation in the NOLTA'97Quantum Physicstext