Title

Hartree-Fock Based Diagonalization: An Efficient Method for Simulating Disordered Interacting Electrons

Abstract

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 spineless electrons in a random potential interacting via the 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.

Meeting Name

1998 Europhysics Conference on Computational Physics (1998: Sep. 2-5, Granada, Spain)

Department(s)

Physics

Keywords and Phrases

Computer simulation; Electric conductance; Numerical methods; Quantum theory; Random processes; Disordered many-particle systems; Hartree-Fock based diagonalization; Quantum Coulomb glass; Electron energy levels

International Standard Serial Number (ISSN)

0010-4655

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1999 Elsevier, All rights reserved.

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