Kinematics of bosons in a two-dimensional potential well

Analysis of the kinematics of bosons (photons, atoms) in two-dimensional potential channels with the transverse eigenvalues slowly varying along the longitudinal axis of the channel reveals the existence of Bose condensation without temperature lowering, the stratification of an atomic flux over phase states, and also processes which phenomenologically reproduce phenomena in nonlinear media (shock-like waves). These phenomena can form the basis for new experimental methods.