Critical Spectral Statistics at the Metal-Insulator Transition in Interacting Fermionic Systems

Дата и время публикации : 1998-02-20T17:21:38Z

Авторы публикации и институты :
Philippe Jacquod

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: Revtex, 4 pages, 3 encapsulated postscript figures appended Final version as accepted for publication in PRL
Первичная категория: cond-mat.mes-hall

Все категории : cond-mat.mes-hall

Краткий обзор статьи: The spectral properties of a disordered system with few interacting three-dimensional spinless fermions are investigated. We show the existence of a critical spacings distribution which is invariant upon increase of the system size, but strongly depends on the number of particles. At the critical point, we report a substantial decrease of the degree of level repulsion as the number of particles increases indicating a decrease of nearest level correlations associated with the sparsity of the Hamiltonian matrix.

Category: Physics