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TT: Fachverband Tiefe Temperaturen
TT 70: Correlated Electrons: General Theory 2
TT 70.4: Talk
Friday, March 15, 2013, 10:15–10:30, H24
Dynamics in model systems of strongly interacting electrons — •Malte Behrmann1, Michele Fabrizio2, and Frank Lechermann1 — 1I. Institut für Theoretische Physik, Jungiusstr. 9, 20355 Hamburg — 2SISSA, via Bonomea 265, 34136 Trieste
Explicit time-dependent phenomena in strongly interacting quantum systems have recently become of great interest, especially in view of novel challenging experiments with time-dependent probing. Understanding the dynamic evolution of electronic correlations is a key issue in describing the non-equilibrium physics taking place in concrete
material systems, e.g. after photo-excitation. This talk discusses work performed on the dynamics of strongly correlated model systems by means of a time-dependent slave-boson mean-field theory that allows for full rotational invariance in spin and orbital space. Therewith a generic
time-dependent Mott scenario is accessible and the dynamics of quasiparticle and multiplet degrees of freedom may be monitored. Our approach is closely related to the time-dependent Gutzwiller framework by Fabrizio and coworkers [1].
[1] M. Schiró and M. Fabrizio, Phys. Rev. Lett. 105, 076401 (2010)