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.
Recommended Citation
T. Vojta et al., "Hartree-Fock Based Diagonalization: An Efficient Method for Simulating Disordered Interacting Electrons," Computer Physics Communications, vol. 121, pp. 489 - 492, Elsevier, Sep 1999.
The definitive version is available at https://doi.org/10.1016/S0010-4655(99)00388-4
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.
Publication Date
01 Sep 1999
