In the dilute limit of the 1D infinite-U Hubbard model the charge Drude weight admits a closed-form expression whose low-temperature expansion, after regularization of the singular contribution, yields linear-in-T resistivity.
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A post-processing sign-blocking technique mitigates the fermion sign problem by using data blocking to infer system energies from sign-energy correlations in Monte Carlo samples.
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Transport and Temperature 1: Exact spectrum and resistivity for the one-dimensional infinite-$U$ Hubbard model
In the dilute limit of the 1D infinite-U Hubbard model the charge Drude weight admits a closed-form expression whose low-temperature expansion, after regularization of the singular contribution, yields linear-in-T resistivity.
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A sign-blocking method for mitigating the fermion sign problem
A post-processing sign-blocking technique mitigates the fermion sign problem by using data blocking to infer system energies from sign-energy correlations in Monte Carlo samples.