Berlin 2012 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 45: Correlated Electrons: Poster Session

TT 45.103: Poster

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

Search for Floquet states in many-body quantum systems — •Armin Seibert, Sergey Denisov, and Peter Hänggi — Institut für Physik, Universität Augsburg, Universitätsstr. 1, D-86135 Augsburg

Even under equilibrium conditions, a typical many-body system is hard to handle due to the exponential growth of the number of system states with the number of particles -- spins, cold atoms, qubits, etc --it contains. Recent advances on the front of computational many-body quantum physics, marked by the development of the density matrix renormalization group (DMRG) methods, allowed to get insight into the Hilbert space of 'big' time-independent systems. In order to study the same, but now driven, systems, one must use more sophisticated methods, which should combine existing know-how with specific algorithms developed for periodically driven quantum systems. We present a brief overview of our recent attempts to advance in the corresponding direction, which attempts have involved the combination of the DMRG algorithms, the Floquet theory and a newest computational facility such as a graphic-processing unit (GPU) supercomputer.