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Digitale Medien

On the quantum mechanical description of scattering by a dissipative and diffusive scattering centre (1979)

Cassing, W. ; Friedrich, H.

Springer

The European physical journal 291 (1979), S. 339-346

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ISSN: 1434-601X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01408384

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