Finite temperature numerical renormalization group study of the Mott-transition

Details Finite temperature numerical renormalization group study of the Mott-transition Finite temperature numerical renormalization group study of the Mott-transition

2000-12-18

arxiv.org/abs/cond-mat/0012329v1

Phys. Rev. B 64, 045103 (2001) (9 pages)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 9 eps-figures

Scientific paper

10.1103/PhysRevB.64.045103

Wilson's numerical renormalization group (NRG) 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 on the real frequency axis and investigate the phase diagram for the Mott-Hubbard metal-insulator transition. While for TT_c there is a smooth crossover from metallic-like to insulating-like solutions.

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