Electron-hole generations: A numerical approach to interacting fermion systems

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Abstract

A new approach, motivated by Fock space localization, for constructing a reduced many-particle Hilbert space is proposed and tested. The self-consistent Hartree-Fock approach is used to obtain a single-electron basis from which the many-particle Hilbert space is constructed. For a given size of the truncated many particle Hilbert space, only states with the lowest number of particle-hole excitations are retained and exactly diagonalized. This method is shown to be more accurate than previous truncation methods, while there is no additional computational complexity.

Original languageEnglish
Pages (from-to)725-729
Number of pages5
JournalSolid State Communications
Volume127
Issue number11
DOIs
StatePublished - Sep 2003

Bibliographical note

Funding Information:
I would like to thank Y. Gefen and B.L. Altshuler for useful discussions and the Israel Science foundation for financial support.

Keywords

  • D. Electron-electron interactions
  • D. Electronic transport
  • D. Quantum localization

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