TY - JOUR
T1 - Typicality-based variational cluster approach to thermodynamic properties of the Hubbard model
AU - Nishida, Hisao
AU - Fujiuchi, Ryo
AU - Sugimoto, Koudai
AU - Ohta, Yukinori
N1 - Funding Information:
Acknowledgments We thank Ayumu Sugita for tutorial lectures on the typicality-based approaches and Tomoki Yamaguchi for enlightening discussions. This work was supported in part by JSPS KAKENHI Grants (Nos. JP19J20768, JP19K14644, and JP17K05530) and Keio University Academic Development Funds for Individual Research. The numerical calculations were carried out at YITP in Kyoto University and at Research Center for Computational Science in Okazaki Research Facilities.
Funding Information:
We thank Ayumu Sugita for tutorial lectures on the typicality-based approaches and Tomoki Yamaguchi for enlightening discussions. This work was supported in part by JSPS KAKENHI Grants (Nos. JP19J20768, JP19K14644, and JP17K05530) and Keio University Academic Development Funds for Individual Research. The numerical calculations were carried out at YITP in Kyoto University and at Research Center for Computational Science in Okazaki Research Facilities.
Publisher Copyright:
© 2020 The Physical Society of Japan
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.89.023702
DO - 10.7566/JPSJ.89.023702
M3 - Article
AN - SCOPUS:85079049975
SN - 0031-9015
VL - 89
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
IS - 2
M1 - 023702
ER -