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arXiv · 1107.1631

The time-dependent Gutzwiller theory for multi-band Hubbard models

E. v. Oelsen·G. Seibold·J. Bünemann
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Abstract

We formulate a multi-band generalisation of the time-dependent Gutzwiller theory. This approach allows for the calculation of general two-particle response functions, which are crucial for an understanding of various experiments in solid-state physics. As a first application, we study the momentum- and frequency-resolved magnetic susceptibility in a two-band Hubbard model. Like in the underlying ground-state approaches we find significant differences between the results of our method and those from a time-dependent Hartree-Fock approximation.

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E. v. Oelsen, G. Seibold, J. Bünemann. 2011-11-22. The time-dependent Gutzwiller theory for multi-band Hubbard models. https://doi.org/10.1088/1367-2630%2F13%2F11%2F113031

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