On the quantum mechanical description of scattering by a dissipative and diffusive scattering centre |
| |
Authors: | W. Cassing H. Friedrich |
| |
Affiliation: | 1. Institut für Theoretische Physik I, Universit?t Münster, Münster, W. Germany
|
| |
Abstract: | A partial integro-differential equation is formulated for the Wigner transform of the quantum mechanical reduced density operator describing the time evolution of a “macroscopic” coordinate under the influence of coupling to a large number of “intrinsic” degrees of freedom. The equation contains integral operators which lead to energy dissipation and diffusion and reduces to a transport equation of the Fokker-Planck type if the form factors in the integrands are treated in appropriate (harmonic) approximations. The stationary solution of the partial integro-differential equation is obtained numerically for scattering by a conservative potential and by a dissipative and diffusive scattering centre in one spatial dimension. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |