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Paper detail

Typicality-Based Variational Cluster Approach to Thermodynamic Properties of the Hubbard Model

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, thereby obtaining 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.

preprint2019arXivOpen access
Hisao NishidaRyo FujiuchiKoudai SugimotoYukinori Ohta
cond-mat.str-el
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Hisao NishidaRyo FujiuchiKoudai SugimotoYukinori Ohta

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