# Free Motion of Particles in the Lobachevskii Space in Terms of the Scattering Theory

### Abstract

The problem of the motion of a free particle in the three-dimensional Lobachevskii space are interpreted as scattering by the space. The quantum-mechanical case is considered on the basis of the integral equation derived from the Schr¨odinger equation. After the separation of variables in a quasi-Cartesian coordinate system, the integral equation is derived for the momentum component along the axis of symmetry of a horosphere, which coincides with the z axis. The relationship between the scattering amplitude and analytical functions is established. The methods of iteration and finite differences are used to solve the integral equation.

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*Ukrainian Journal of Physics*,

*64*(12), 1108. https://doi.org/10.15407/ujpe64.12.1108