Hartree-Fock based diagonalization: an efficient method for simulating disordered interacting electrons

Дата и время публикации : 1998-09-12T00:50:28Z

Авторы публикации и институты :
Thomas Vojta
Frank Epperlein
Michael Schreiber

Ссылка на журнал-издание: Computer Phys. Commun. 121–122 (1999), 489-92
Коментарии к cтатье: 7 pages, 3 eps figures included, invited talk at Conference on Computational Physics (Granada, Sep 1998)
Первичная категория: cond-mat.mes-hall

Все категории : cond-mat.mes-hall, cond-mat.str-el

Краткий обзор статьи: We present an efficient numerical method for simulating the low-energy properties of disordered many-particle systems. The method which is based on the quantum-chemical configuration interaction approach consists in diagonalizing the Hamiltonian in an energetically truncated basis build of the low-energy states of the corresponding Hartree-Fock Hamiltonian. As an example we investigate the quantum Coulomb glass, a model of spinless electrons in a random potential interacting via long-range Coulomb interaction. We find that the Coulomb interaction increases the conductance of strongly disordered systems but reduces the conductance of weakly disordered systems.

Category: Physics