# Nonequilibrium $GW+\mathrm{EDMFT}$: Antiscreening and Inverted Populations from Nonlocal Correlations

• Golež, Denis Department of Physics, University of Fribourg, Switzerland
• Boehnke, Lewin Department of Physics, University of Fribourg, Switzerland
• Strand, Hugo U. R. Department of Physics, University of Fribourg, Switzerland
15.06.2017
Published in:
• Physical Review Letters. - 2017, vol. 118, no. 24, p. 246402
English We study the dynamics of screening in photodoped Mott insulators with long-ranged interactions using a nonequilibrium implementation of the GW plus extended dynamical mean-field theory formalism. Our study demonstrates that the complex interplay of the injected carriers with bosonic degrees of freedom (charge fluctuations) can result in long-lived transient states with properties that are distinctly different from those of thermal equilibrium states. Systems with strong nonlocal interactions are found to exhibit a self-sustained population inversion of the doublons and holes. This population inversion leads to low-energy antiscreening which can be detected in time- resolved electron-energy-loss spectra.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
• English
Classification
Physics