Berlin 2015 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 71: Correlated Electrons: Poster Session

TT 71.66: Poster

Mittwoch, 18. März 2015, 15:00–18:00, Poster B

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 quantum systems are of central interest in condensed matter, ultra-cold atoms and in dense plasmas[1]. There, the proper treatment of strong correlations is important. This can be achieved by using the nonequilibrium Green functions framework with a suitable chosen many-body approximation. In this contribution, we study transport properties of finite spatially inhomogeneous Hubbard systems with the T-matrix approximation[2]. The diffusion is analyzed for different spatial geometries in one to three dimensions as a function of the particle number and interaction strength.

[1] Balzer et al., Phys.Rev. B 79 245306 (2009).

[2] Bonitz et al., Contrib.Plasma Phys. (2014),

  DOI: 10.1002/ctpp.201400065

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