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159 papers
Spin and charge dynamics of doped one-dimensional Mott insulators
Takami Tohyama, Hiroki Maeda, Kenji Tsutsui +2
Recent angle-resolved photoemission spectroscopy (ARPES) for a newly discovered doped one-dimensional (1D) Mott insulator BaSrCuO proposed the presence of attra…
Kekulé valence bond order in the Hubbard model on the honeycomb lattice with possible lattice distortions for graphene
Yuichi Otsuka, Seiji Yunoki
We investigate if and how the valence-bond-solid (VBS) state emerges in the Hubbard model on the honeycomb lattice when the Peierls-type electron-lattice coupling is introduced. We…
Discrete-phase-space method for driven-dissipative dynamics of strongly interacting bosons in optical lattices
Kazuma Nagao, Ippei Danshita, Seiji Yunoki
We develop a discrete truncated Wigner method to analyze the real-time evolution of dissipative SU() spin systems coupled with a Markovian environment. This semiclassical…
Spin loop-current textures in Hubbard models
Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki +1
The recent experimental observations of loop current in SrIrO, YBaCuO, and SrCuO have inspired a theoretical study that broadly r…
Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder
Takami Tohyama, Kazuya Shinjo, Shigetoshi Sota +1
Photoinduced nonequilibrium states in the Mott insulators reflect the fundamental nature of competition between itinerancy and localization of the charge degrees of freedom. The sp…
Efficient variational quantum circuit structure for correlated topological phases
Rong-Yang Sun, Tomonori Shirakawa, Seiji Yunoki
We propose an efficient circuit structure of variational quantum circuit \textit{Ansätze} used for the variational quantum eigensolver (VQE) algorithm in calculating gapped topolog…