Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 22: Transport: Poster Session

TT 22.61: Poster

Mittwoch, 27. Februar 2008, 14:00–18:00, Poster B

Approach to transport in modular quantum systems by modelling of reservoirs — •Marcel Ogiewa and Jochen Gemmer — University of Osnabrueck, Osnabrueck, Germany

We investigate the transport behavior in a special class of quantum models, which are essentially of the periodic one-particle type but may nevertheless exhibit regular transport. To induce a current these systems are coupled to different baths at each ending.

The corresponding Lindblad Master Equation is solved by a Monte Carlo stochastic unraveling method in order to find the quasi-stationary state.

Hence we verify the existence of diffusive transport (in a certain parameter range) according to Fourier's law and extract the conductivity. The results are compared to other findings for the same systems derived by entirely different methods.