971 citations · 3.5k across the 60 of their papers we have counts for
60 papers
Controlling particle current in a many-body quantum system by external driving
Shuto Mizuno, Kazuya Fujimoto, Yuki Kawaguchi
We propose a method to control the particle current of a one-dimensional quantum system by resonating two many-body states through an external driving field. We consider the Bose-H…
Designing nontrivial one-dimensional Floquet topological phases using a spin-1/2 double-kicked rotor
Yusuke Koyama, Kazuya Fujimoto, Shuta Nakajima +1
A quantum kicked rotor model is one of the promising systems to realize various Floquet topological phases. We consider a double-kicked rotor model for a one-dimensional quasi-spin…
Nuclear spin relaxation rate of nonunitary Dirac and Weyl superconductors
Koki Maeno, Yuki Kawaguchi, Yasuhiro Asano +1
Nonunitary superconductivity has attracted renewed interest as a novel gapless phase of matter. In this study, we investigate the superconducting gap structure of nonunitary odd-pa…
Impact of Dissipation on Universal Fluctuation Dynamics in Open Quantum Systems
Kazuya Fujimoto, Ryusuke Hamazaki, Yuki Kawaguchi
Recent experimental and theoretical works have uncovered nontrivial quantum dynamics due to external dissipation. Using an exact numerical method and a renormalization-group-based…
Spin-wave growth via Shapiro resonances in a spinor Bose-Einstein condensate
Yuya Imaeda, Kazuya Fujimoto, Yuki Kawaguchi
We theoretically study the resonant phenomenon in a spin-1 Bose-Einstein condensate periodically driven by a quadratic Zeeman coupling. This phenomenon is closely related to the Sh…
Controllable inter-skyrmion attractions and resulting skyrmion-lattice structures in two-dimensional chiral magnets with in-plane anisotropy
Mai Kameda, Rio Koyama, Takuro Nakajima +1
We study inter-skyrmion interactions and stable spin configurations in a 2D chiral magnet with in-plane anisotropies of a tilted magnetic field and the magneto-crystalline anisotro…