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Finite-temperature numerical renormalization group study of the Mott transition

Finite-temperature numerical renormalization group study of the Mott transition

Wilson's numerical renormalization group method for the calculation of dynamic properties of impurity models is generalized to investigate the effective impurity model of the dynamical mean-field theory at finite temperatures. We calculate the spectral function and self-energy for the Hubbard model on a Bethe lattice with infinite coordination number directly …