Golež, Denis Boehnke, Lewin Strand, Hugo U. R. Eckstein, Martin Werner, Philipp 2017-06-15 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. application/pdf https://folia.unifr.ch/global/documents/306149 https://folia.unifr.ch/documents/306149/files/wer_nai.pdf https://folia.unifr.ch/documents/306149/files/wer_nai_sm.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.118.246402 info:eu-repo/semantics/openAccess License undefined Physical Review Letters. - 2017, vol. 118, no. 24, p. 246402 info:eu-repo/classification/udc/53 Nonequilibrium $GW+\mathrm{EDMFT}$: Antiscreening and Inverted Populations from Nonlocal Correlations http://purl.org/coar/resource_type/c_6501