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Diagrammatic Monte Carlo simulation of non-equilibrium systems
Philipp Werner, Takashi Oka, Andrew J. Millis
We generalize the recently developed diagrammatic Monte Carlo techniques for quantum impurity models from an imaginary time to a Keldysh formalism suitable for real-time and nonequ…
Photo-induced Tomonaga-Luttinger-like liquid in a Mott insulator
Takashi Oka, Hideo Aoki
Photo-induced metallic states in a Mott insulator are studied for the half-filled, one-dimensional Hubbard model with the time-dependent density matrix renormalization group. An ir…
Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
Naoto Tsuji, Takashi Oka, Hideo Aoki
We propose to combine the Floquet formalism for systems in ac fields with the dynamical mean-field theory to study correlated electron systems periodically driven out of equilibriu…
Photovoltaic Hall effect in graphene
Takashi Oka, Hideo Aoki
Response of electronic systems in intense lights (AC electric fields) to DC source-drain fields is formulated with the Floquet method. We have then applied the formalism to graphen…
Nonequilibrium Quantum Breakdown in a Strongly Correlated Electron System
Takashi Oka, Hideo Aoki
The nonlinear transport properties of the Mott insulator are discussed with focus on the many-body Landau-Zener mechanism. After reviewing basic concepts such as the non-adiabatic…