# Comparative study of nonequilibrium insulator-to-metal transitions in electron-phonon systems

@article{Sayyad2019ComparativeSO,
title={Comparative study of nonequilibrium insulator-to-metal transitions in electron-phonon systems},
author={Sharareh Sayyad and Rok Žitko and Hugo U. R. Strand and Philipp Werner and Denis Gole{\vz}},
journal={Physical Review B},
year={2019}
}
• Published 3 October 2018
• Physics
• Physical Review B
We study equilibrium and nonequilibrium properties of electron-phonon systems described by the Hubbard-Holstein model using dynamical mean-field theory. In equilibrium, we benchmark the results for impurity solvers based on the one-crossing approximation and slave-rotor approximation against non-perturbative numerical renormalization group reference data. We also examine how well the low-energy properties of the electron-boson coupled systems can be reproduced by an effective static electron…
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