Exploring
Quantum World

Computational Materials Science Research Team

RESEARCH SUMMARY

One of our main focuses is to develop state-of-the-art numerical methods such as quantum Monte Carlo methods and tensor network methods including the density matrix renormalization method for simulating ground states as well as quantum dynamics of strongly correlated quantum systems. We are also interested in developing quantum algorithms for quantum many-body systems and quantum computing simulations using classical computers such as Supercomputer Fugaku, as a ground challenge of information science in quest of a new computing paradigm.

  • SUBMITTED PAPERS
  • PUBLICATIONS
  • Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki, and Takami Tohyama, “Spin loop-current textures in the Hubbard models”arXiv:2305.13557
  • Takami Tohyama, Kazuya Shinjo, Shigetoshi Sota, and Seiji Yunoki, “Anomalous suppression of photo-induced in-gap weight in the optical conductivity of a two-leg Hubbard ladder”arXiv:2305.05498
  • Rong-Yang Sun, Tomonori Shirakawa, and Seiji Yunoki, “Efficient variational quantum circuit structure for correlated topological phases”arXiv preprint arXiv:2303.17187
  • Zhang, Hao-Kai, Rong-Yang Sun, and Zheng-Yu Weng, “Pair density wave characterized by a hidden string order parameter”arXiv preprint arXiv:2212.06170
  • Jing-Yu Zhao, Shuai A. Chen, Rong-Yang Sun, and Zheng-Yu Weng, “Continuous transition from a Landau quasiparticle to a neutral spinon”arXiv preprint arXiv:2210.04918
  • Kazuya Shinjo, Shigetoshi Sota, Seiji Yunoki, and Takami Tohyama, “Controlling inversion and time-reversal symmetries by subcycle pulses in the one-dimensional extended Hubbard model”Phys. Rev. B 107, 195103 (2023)
  • Tomonori Shirakawa, Hiroshi Ueda, and Seiji Yunoki, “Construction of quantum circuit for quantum many-body states based on the tensor network method”The Physical Society of Japan Spring Meeting 2023, Online (March 22-25, 2023)
  • Hiroshi Watanabe, Tomonori Shirakawa, Kazuhiro Seki, Hirofumi Sakakibara, Takao Kotani, Hiroaki Ikeda, and Seiji Yunoki, “Monte Carlo study of cuprate superconductors in a four-band d-p model: Role of orbital degrees of freedom”J. Phys.: Condens. Matter 35, 195601 (2023)
  • Kenji Tsutsui, Kazuya Shinjo, Shigetoshi Sota, and Takami Tohyama, “Exciton-assisted low-energy magnetic excitations in a photoexcited Mott insulator on a square lattice”Commun. Phys. 6, 41 (2023)
  • Jing-Yu Zhao, Shuai A. Chen, Rong-Yang Sun, and Zheng-Yu Weng, “Continuous transition from a Landau quasiparticle to a neutral spinon”Phys. Rev. B 107, 085112 (2023)

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