Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Poster Session: Correlated Electrons 1

TT 19.34: Poster

Montag, 20. März 2017, 15:00–19:00, P2-EG

Density matrix embedding theory for multi-band Hubbard models — •Michael Schmid and Maria Daghofer — Universität Stuttgart

Density matrix embedding theory (DMET) [1], a recently proposed numerical method when working on many-particle systems, and its cluster formulation (CDMET) [2] are used to investigate strongly correlated electron systems such as multi-band Hubbard models. Firtst the method is tested for the single-band Hubbard model in one and two dimensions. Then we extend the method, which so far was just used to study single-band systems, to multi-band systems. We hope to get further insight into the two-band Hubbard model on a cubic lattice by using an exact diagonalization solver.

[1] G. Knizia et. al., Phys. Rev. Lett. 109, 186404 (2012)

[2] B. Zheng et. al., arXiv preprint arXiv:1608.03316 (2016)