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DY: Fachverband Dynamik und Statistische Physik

DY 7: Correlated Electrons: Nonequilibrium Quantum Many-Body Systems 1 (joint session TT/ DY)

DY 7.7: Talk

Monday, March 16, 2015, 11:30–11:45, H 0104

Nonequilibrium dynamics of screening in the extended Hubbard model — •Denis Golež and Philipp Werner — University of Fribourg

We will present a study of the non-equilibrium dynamics in the extended Hubbard model on the square lattice using time-dependent extended dynamical mean-field theory. The short-time effect of the dynamical screening due to the photo-doping is the reduction of the effective static interaction. On the same time scale the fully screened interaction is transformed from the single to double mode structure due to photo-doped charge carriers. At longer times the the dynamical screening enhance the relaxation dynamics.