Mott-Hubbard transition in infinite dimensions

Details Mott-Hubbard transition in infinite dimensions Mott-Hubbard transition in infinite dimensions

1998-10-19

arxiv.org/abs/cond-mat/9810222v2

Phys. Rev. Lett. 82, 1915 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, RevTeX, 5 figures included with epsfig Final version for PRL, includes L=14 data

Scientific paper

10.1103/PhysRevLett.82.1915

We calculate the zero-temperature gap and quasiparticle weight of the half-filled Hubbard model with a random dispersion relation. After extrapolation to the thermodynamic limit, we obtain reliable bounds on these quantities for the Hubbard model in infinite dimensions. Our data indicate that the Mott-Hubbard transition is continuous, i.e., that the quasiparticle weight becomes zero at the same critical interaction strength at which the gap opens.

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