Maximum-entropy approaches to quantum electronic transport
Por:
Mello P.A., Pichard J.-L.
Publicada:
1 ene 1989
Resumen:
Two recent theories study the distribution wL(M) of the transfer matrix M of a disordered conductor of length L, making, at different stages, a maximum-entropy hypothesis. One theory assumes a mean free path and describes the L evolution of wL(M) by a diffusion equation; the other assumes a density qL(±) of inverse localization lengths and proposes an ansatz for wL(M). Results agree with microscopic calculations. Here, we prove the equivalence of the two theories, if the density qL(±) given by the first is used in the second one. We also find a uniform qL(±), as confirmed by independent numerical calculations. © 1989 The American Physical Society.
Filiaciones:
Mello P.A.:
Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364, DelegaciAlvaro Obregon, Mexico
Pichard J.-L.:
Service de Physique du Solide et de Résonance Magnétique, Departement de Physique Générale, Institut de Recherche Fondamentale, Commissariat à, 91191 Gif-sur-Yvette CEDEX, France
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