Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 59: Correlated Electrons: Quantum Impurities and Kondo Physics; Other Materials

TT 59.5: Vortrag

Donnerstag, 19. März 2020, 16:00–16:15, HSZ 03

Transport in interacting quantum dots: Analytical results from the path integral approach beyond the weak tunneling regime — •Luca Magazzù and Milena Grifoni — Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany

We report on the progress in transport calculations with an analytical path integral technique applied to interacting quantum dots. Starting from the formally exact diagrammatic representation of the dot dynamics and current, a suitable parametrization of the paths of the dot variables allows to apply resummation schemes which address parameter regimes ranging from the noninteracting to the low temperature/strongly-interacting. The known analytical results are recovered in the appropriate limits.