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Diffusion of Non‐Interacting Quantum Particles in a Disordered System. The Transport Length in the Classical Limit
Author(s) -
Lenk R.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221380138
Subject(s) - superposition principle , limit (mathematics) , diffusion , uncorrelated , physics , mean free path , quantum , statistical physics , path (computing) , density matrix , classical limit , quantum mechanics , classical mechanics , mathematical analysis , scattering , mathematics , statistics , computer science , programming language
Within the model of uncorrelated scatterers and a long mean free path the recently proposed structure of the density matrix in a current‐carrying state is shown to be produced and reproduced by the superposition of all scattered waves. The corresponding transport length corresponds to its classical value, but the physical picture is a new one.