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Interaction-Driven Topological Insulator in Fermionic Cold Atoms on an Optical Lattice: A Design with a Density Functional Formalism
Sota Kitamura, Naoto Tsuji, Hideo Aoki
We design an interaction-driven topological insulator for fermionic cold atoms in an optical lattice, that is, we pose the question of whether we can realize in a continuous space…
Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation
Yuta Murakami, Philipp Werner, Naoto Tsuji +1
We study the relaxation of the Holstein model after a sudden switch-on of the interaction by means of the nonequilibrium dynamical mean field theory, with the self-consistent Migda…
Theory of Anderson pseudospin resonance with Higgs mode in superconductors
Naoto Tsuji, Hideo Aoki
A superconductor illuminated by an ac electric field with frequency is theoretically found to generate a collective precession of Anderson's pseudospins, and hence a coherent a…
Supersolid Phase Accompanied by a Quantum Critical Point in the Intermediate Coupling Regime of the Holstein Model
Yuta Murakami, Philipp Werner, Naoto Tsuji +1
We reveal that electron-phonon systems described by the Holstein model on a bipartite lattice exhibit, away from half filling, a supersolid (SS) phase characterized by coexisting c…