Non-linear supersymmetric Sigma-Model for Diffusive Scattering of Classical Waves with Resonance Enhancement

Дата и время публикации : 1998-03-09T17:19:02Z

Авторы публикации и институты :
B. Elattari (Max-Planck-Institut fuer Kernphysik, 69029 Heidelberg, Germany)
V. Kagalovsky (Max-Planck-Institut fuer Kernphysik, 69029 Heidelberg, Germany)
H. A. Weidenmueller (Max-Planck-Institut fuer Kernphysik, 69029 Heidelberg, Germany)

Ссылка на журнал-издание: Europhys.Lett. 42 (1998) 13
Коментарии к cтатье: 4 pages, 1 Figure, to be published in Europhysics Letters
Первичная категория: cond-mat.dis-nn

Все категории : cond-mat.dis-nn

Краткий обзор статьи: We derive a non-linear sigma-model for the transport of light (classical waves) through a disordered medium. We compare this extension of the model with the well-established non-linear sigma-model for the transport of electrons (Schroedinger waves) and display similarities of and differences between both cases. Motivated by experimental work (M. van Albada et al., Phys. Rev. Lett. 66 (1991) 3132), we then generalize the non-linear sigma-model further to include resonance scattering. We find that the form of the effective action is unchanged but that a parameter of the effective action, the mean level density, is modified in a manner which correctly accounts for the data.

Category: Physics