Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 52: Focus Session: Realistic Dynamical Mean-Field Approaches
40mm to Correlated Quantum Materials

TT 52.3: Invited Talk

Wednesday, March 9, 2016, 16:00–16:30, H20

Dynamical Screening in Correlated Electron Materials — •Philipp Werner — University of Fribourg, 1700 Fribourg, Switzerland

I will discuss efficient methods for treating dynamically screened interactions within dynamical mean field theory (DMFT). These methods allow to incorporate ab-initio estimates of the local Coulomb matrix elements into low-energy effective models, and to treat the screening from nonlocal Coulomb interactions within extended DMFT or more sophisticated formalisms. I will present results from applications to simple model systems and strongly correlated materials, and some insights into the real-time dynamics of screening obtained with a recent nonequilibrium implementation of extended DMFT.