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Nonequilibrium variational-cluster approach to real-time dynamics in the Fermi-Hubbard model
Felix Hofmann, Martin Eckstein, Michael Potthoff
The nonequilibrium variational-cluster approach is applied to study the real-time dynamics of the double occupancy in the one-dimensional Fermi-Hubbard model after different fast c…
Effective doublon and hole temperatures in the photo-doped dynamic Hubbard model
Philipp Werner, Martin Eckstein
Hirsch's dynamic Hubbard model describes the effect of orbital expansion with occupancy by coupling the doublon operator to an auxiliary boson. We use the nonequilibrium dynamical…
Exciton Recombination in One-Dimensional Organic Mott Insulators
Zala Lenarčič, Martin Eckstein, Peter Prelovšek
We present a theory for the recombination of (charged) holons and doublons in one-dimensional organic Mott insulators, which is responsible for the decay of a photoexcited metallic…
Dynamics of screening in photo-doped Mott insulators
Denis Golez, Martin Eckstein, Philipp Werner
We use a nonequilibrium implementation of extended dynamical mean field theory to study the effect of dynamical screening in photo-excited Mott insulators. The insertion of doublon…
Stroboscopic prethermalization in weakly interacting periodically driven systems
Elena Canovi, Marcus Kollar, Martin Eckstein
Time-periodic driving provides a promising route to engineer non-trivial states in quantum many-body systems. However, while it has been shown that the dynamics of integrable syste…
Beyond the Hubbard bands in strongly correlated lattice bosons
Hugo U. R. Strand, Martin Eckstein, Philipp Werner
We investigate features in the single-particle spectral function beyond the Hubbard bands in the strongly correlated normal phase of the Bose-Hubbard model. There are two distinct…