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cond-mat.str-el2025
Qubit parametrization of the variational discrete action theory for the multiorbital Hubbard model
Zhengqian Cheng, Chris A. Marianetti
The variational discrete action theory (VDAT) at \mathcal{N}=3 is a potent tool for accurately capturing Mott and Hund physics at zero temperature in d=\infty at a cost comparable…
cond-mat.str-el2025
Mott transition from the non-analyticity of the one-body reduced density-matrix functional
Zhengqian Cheng, Chris A. Marianetti
One-body reduced density-matrix functional (1RDMF) theory has yielded promising results for small systems such as molecules, but has not addressed quantum phase transitions such as…