Bochum 2015 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 14: Poster Session - Theory and Modelling

P 14.16: Poster

Dienstag, 3. März 2015, 16:30–18:30, Foyer Audimax

Nonequilibrium Green functions approach to transport properties in strongly coupled finite quantum systems — Niclas Schlünzen, Sebastian Hermanns, and •Michael Bonitz — ITAP, Christian-Albrechts-Universität Kiel Leibnizstr. 15, 24098 Kiel, Germany

Transport properties of strongly correlated spatially inhomogeneous quantum systems is of central interest in dense plasmas [1], ultracold atoms and condensed matter. This is possible in the framework of nonequilibrium Green functions using suitable many-body approximations. Here we present results for finite Hubbard clusters studied within the T-matrix approximation [2,3]. Specifically we analyze quantum diffusion of correlated electrons as a function of coupling strength and particle number in one, two and three dimensions.
Supported by the Deutsche Forschungsgemeinschaft via project BO1366-9

[1] K. Balzer et al., Phys. Rev. B 79, 245306 (2009) [2] N. Schlünzen, S. Hermanns, and M. Bonitz, Phys. Rev. B 90, 125111 (2014) [3] M. Bonitz et al., Contrib. Plasma Phys. (2015), DOI: 10.1002/ctpp.201400065