✦ LIBER ✦

Electron–hole generations: a numerical approach to interacting fermion systems

✍ Scribed by Richard Berkovits

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 167 KB
Volume: 127
Category: Article
ISSN: 0038-1098
DOI: 10.1016/s0038-1098(03)00523-4

No coin nor oath required. For personal study only.

✦ Synopsis

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.

📜 SIMILAR VOLUMES

Equation of motion approach to the plasm

Equation of motion approach to the plasmon-plasmon interaction in a many-electron system

✍ S.S. Mandal; D.N. Tripathy 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 305 KB

A new approach to electron–electron inte

A new approach to electron–electron interactions in strongly correlated systems at arbitrary spin-polarization and temperature

✍ M.W.C. Dharma-wardana 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 151 KB

The uniform electron fluid is the reference model for density functional calculations. Even for this system, many-body perturbation theory, and related methods become questionable when the density parameter r s exceeds unity. Hence, quantum Monte Carlo (QMC) simulation has been almost the only appli