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TT: Fachverband Tiefe Temperaturen

TT 45: Correlated Electrons: Poster Session

TT 45.50: Poster

Thursday, March 29, 2012, 15:00–19:00, Poster B

Comparison of TEBD and NRG methods for computing the nonequilibrium dynamics of nanosystems coupled to a bosonic bath — •Malcolm Einhellinger¹, Eric Jeckelmann¹, Sabine Tornow², and Gertrud Zwicknagl² — ¹Leibniz Universität Hannover — ²TU Braunschweig

We investigate the applicability of the Time-Dependent Renormalization Group (TEBD) Algorithm to low-dimensional quantum systems coupled to a bosonic bath. For that purpose we compare outcomes from TEBD realtime simulations with results from the Time-Dependent Numerical Renomalization Group (TD-NRG) Algorithm which has been shown to work well for those kind of problems. In this regard, we study the transport from a donor to an acceptor structure, connected via a bridge molecule. Coupling donor and acceptor to a bosonic bath damps the normally occuring oscillations in the particle densities and gives new insights in the physics of transport effects through bridge molecules.