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- W2894966542 abstract "We study equilibrium and nonequilibrium properties of electron-phonon systems described by the Hubbard-Holstein model using the 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-electron interaction. The one-crossing and slave-rotor approximations are then used to simulate insulator-to-metal transitions induced by a sudden switch-on of the electron-phonon interaction. The slave-rotor results suggest the existence of a critical electron-phonon coupling above which the system is transiently trapped in a non-thermal metallic state with coherent quasiparticles. The same quench protocol in the one-crossing approximation results in a bad metallic state." @default.
- W2894966542 created "2018-10-12" @default.
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- W2894966542 date "2019-01-09" @default.
- W2894966542 modified "2023-09-30" @default.
- W2894966542 title "Comparative study of nonequilibrium insulator-to-metal transitions in electron-phonon systems" @default.
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- W2894966542 doi "https://doi.org/10.1103/physrevb.99.045118" @default.
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