Electron-hole generations: a numerical approach to interacting fermion systems |
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Authors: | Richard Berkovits |
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Institution: | Minerva Center and Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel |
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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. |
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Keywords: | 72 15 Rn 71 55 Jv 71 10 Fd |
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