Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 51: Quantum Gases: Fermions

Q 51.5: Vortrag

Donnerstag, 11. März 2010, 15:00–15:15, E 001

Nonequilibrium transport of fermions through an Anderson quantum dot — •Denes Sexty — Institut fuer Theoretische Physik, Heidelberg, Deutschland

The non-equilibrium time evolution of an Anderson quantum dot coupled between two lead-reservoirs forming a chemical-potential gradient for fermions is investigated. We use Kadanoff-Beym dynamic equations derived from the two-particle irreducible effective action. The method allows the determination of the non-equilibrium (transient) as well as stationary transport through the quantum dot, and results are compared to pure perturbative approximations for different values of the interactions between the fermions. Our aim is to study the non-equilibrium transport in the Kondo regime in the framework of an extended renormalization-group treatment.