A Quantum Monte Carlo Method and Its Applications to Multi-Orbital Hubbard Models

Yukitoshi Motome*, Masatoshi Imada

*この研究の対応する著者

研究成果: Article査読

27 被引用数 (Scopus)

抄録

We present a framework of an auxiliary field quantum Monte Carlo (QMC) method for multi-orbital Hubbard models. Our formulation can be applied to a Hamiltonian which includes terms for on-site Coulomb interaction for both intra- and inter-orbitals, intra-site exchange interaction and energy differences between orbitals. Based on our framework, we point out possible ways to investigate various phase transitions such as metal-insulator, magnetic and orbital order-disorder transitions without the minus sign problem. As an application, a two-band model is investigated by the projection QMC method and the ground state properties of this model are presented.

本文言語English
ページ(範囲)1872-1875
ページ数4
ジャーナルjournal of the physical society of japan
66
7
DOI
出版ステータスPublished - 1997 7
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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