Properties of Gutzwiller wave-functions for multi-band models

Details Properties of Gutzwiller wave-functions for multi-band models Properties of Gutzwiller wave-functions for multi-band models

2003-04-08

arxiv.org/abs/cond-mat/0304183v1

Physics

Condensed Matter

Strongly Correlated Electrons

29 pages

Scientific paper

10.1103/PhysRevB.68.155117

We analyze the Mott transition in multi-band Hubbard models with the inclusion of multiplet exchange splittings as it arises in infinite dimensions by using the generalized Gutzwiller wave-function introduced by B\"unemann, Weber and Gebhard [Phys. Rev. B 57, 6896 (1998)]. We also present an extension of that variational wave-function to account for broken-symmetry phases, which still allows an exact analytical treatment. Our analysis reveals some drawbacks of the variational wave-function, which, in our opinion, imply that Gutzwiller-type of wave-functions do not properly capture quasi-particle properties close to a Mott transition.

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