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- W2963289742 abstract "The use of effective local Coulomb interactions that are dynamical, that is, frequency-dependent, is an efficient tool to describe the effect of long-range Coulomb interactions and screening thereof in solids. The dynamical character of the interaction introduces the coupling to screening degrees of freedom such as plasmons or particle-hole excitations into the many-body description. We summarize recent progress using these concepts, putting emphasis on dynamical mean field theory (DMFT) calculations with dynamical interactions (“doubly dynamical mean field theory”). We discuss the relation to the combined GW+DMFT method and its simplified version “Screened Exchange DMFT”, as well as the cumulant schemes of many-body perturbation theory. On the example of the simple transition metal SrVO3, we illustrate the mechanism of the appearance of plasmonic satellite structures in the spectral properties, and discuss implications for the low-energy electronic structure." @default.
- W2963289742 created "2019-07-30" @default.
- W2963289742 creator A5027398903 @default.
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- W2963289742 date "2016-04-01" @default.
- W2963289742 modified "2023-09-26" @default.
- W2963289742 title "Electronic polarons, cumulants and doubly dynamical mean field theory: Theoretical spectroscopy for correlated and less correlated materials" @default.
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- W2963289742 doi "https://doi.org/10.1016/j.elspec.2016.01.001" @default.
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