17 citations · 17 across the 1 of their papers we have counts for
5 papers
Light-induced switching of magnetic order in the anisotropic triangular-lattice Hubbard model
Hayato Kobayashi, Ryo Fujiuchi, Koudai Sugimoto +1
The time-dependent exact-diagonalization method is used to study the light-induced phase transition of magnetic orders in the anisotropic triangular-lattice Hubbard model. Calculat…
Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model
Ryo Fujiuchi, Tatsuya Kaneko, Koudai Sugimoto +2
We investigate the competition between superconductivity (SC) and charge density wave (CDW) under a time-dependent periodic field in the attractive Hubbard model. By employing the…
Typicality-Based Variational Cluster Approach to Thermodynamic Properties of the Hubbard Model
Hisao Nishida, Ryo Fujiuchi, Koudai Sugimoto +1
We develop the variational-cluster-approximation method based on the thermal-pure-quantum-state approach and apply the method to the calculations of the thermodynamic properties of…
Photoinduced electron-electron pairing in the extended Falicov-Kimball model
Ryo Fujiuchi, Tatsuya Kaneko, Yukinori Ohta +1
By employing the time-dependent exact diagonalization method, we investigate the photoexcited states of the excitonic insulator in the extended Falicov-Kimball model (EFKM). We her…
Excitonic Order and Superconductivity in the Two-Orbital Hubbard Model: Variational Cluster Approach
Ryo Fujiuchi, Koudai Sugimoto, Yukinori Ohta
Using the variational cluster approach based on the self-energy functional theory, we study the possible occurrence of excitonic order and superconductivity in the two-orbital Hubb…