Typicality-based variational cluster approach to thermodynamic properties of the Hubbard model

Hisao Nishida, Ryo Fujiuchi, Koudai Sugimoto, Yukinori Ohta

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We develop the variational-cluster-approximation method based on the thermal-pure-quantum-state approach and apply the method to the calculations of the thermodynamic properties of the Hubbard model. We thereby obtain the temperature dependence of the single-particle excitation spectra, entropy and specific heat, and order parameter of the antiferromagnetic phase efficiently. We thus demonstrate that the method developed here has a potential power for elucidating finite-temperature properties of strongly correlated electron systems.

本文言語English
論文番号023702
ジャーナルJournal of the Physical Society of Japan
89
2
DOI
出版ステータスPublished - 2020

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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