Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 101: Transport - Poster Session

TT 101.3: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Exact solutions of collective heat transport — •Gabriel Topp, Tobias Brandes, and Gernot Schaller — Institut für Theoretische Physik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany

In the last decades a lot of different tools to describe transport processes in open quantum systems have been developed. Prominent examples include e.g. master equations or Green’s functions. The model of a single impurity coupled to two reservoirs is therefore a well-known problem [1].

We show that several collective transport setups can be mapped to the single impurity model. Using exact solutions of the Heisenberg equations of motion we calculate stationary transport properties, both in fermionic and bosonic systems. With our proper solutions we investigate the validity of simple markovian master equations.
G. Schaller, P. Zedler, and T. Brandes, Phys. Rev. A 79, 032110 (2009)