Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 45: Correlated Electrons: Poster Session
TT 45.50: Poster
Donnerstag, 29. März 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.