Coupling of Two- and Three-Particle Channels in Slow Antiproton — Atom Collisions
Semiclassical approximation for the problem of coupled 2- and 3- particle channels in ̄p − A collisions is developed beginning from the quantum equations. Closed expressions for S-matrix elements are obtained. The approximation avoids inherent difficulties and uncertainties of postulated semiclassical approaches, and allows to consider the main quantum effects.
KeywordsSemiclassical Approximation Quantum Equation Total Wave Function Closed Expression Semiclassical Approach
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