Kazuya Fujimoto's page

• Associate professor, Institute for Liberal Arts, Institute of Science Tokyo
• Research interest
  nonequilibrium statistical mechanics, cold atoms
• Methods
  [Analytical method] random matrix theory, Bethe ansatz, renormalization group, singular perturbation theory, weak wave turbulence theory, classical stochastic process methods, etc.
  [Numerical method] time-evolving decimation method, density matrix renormalization group, exact diagonalization, pseudo-spectral method, etc.
• Google Scholar

Selected publications

1. Taiki Ishiyama, Taiga Kurose, Kazuya Fujimoto, and Tomohiro Sasamoto
   Exact anomalous current fluctuations in the strong-anisotropy limit of the XXZ chain
   arXiv:2609.37512
2. Toma Yoneya, Kazuya Fujimoto, and Yuki Kawaguchi
   Criteria for Feasible Monte Carlo Stochastic Simulations of Bosonic Markovian Open Quantum Dynamics
   arXiv:2608.06056
3. Kiryang Kwon, Kazuya Fujimoto, Junhyeok Hur, Byungjin Lee, Samgyu Hwang, Sumin Kim, Ryusuke Hamazaki, Yuki Kawaguchi, and Jae-yoon Choi
   Universal Family-Vicsek scaling in quantum gases far from equilibrium
   arXiv:2603.09060
4. Taiki Ishiyama, Kazuya Fujimoto, and Tomohiro Sasamoto
   Exact Current Fluctuations in a Tight-Binding Chain with Dephasing Noise
   arXiv:2504.06989
5. Kazuya Fujimoto, Taiki Ishiyama, Taiga Kurose, Takato Yoshimura, and Tomohiro Sasamoto
   Exact Anomalous Current Fluctuations in Quantum Many-Body Dynamics
   Phys. Rev. Lett. 137, 136301 (2026)
6. Gevorg Martirosyan, Kazuya Fujimoto, and Nir Navon
   An Equation of State for Turbulence in the Gross-Pitaevskii model
   Phys. Rev. Lett. 136, 153401 (2026)
7. Kazuya Fujimoto and Tomohiro Sasamoto
   Quantum Transport in Interacting Spin Chains: Exact Derivation of the Tracy-Widom Distribution
   Phys. Rev. Lett. 136, 087102 (2026)
8. Taiki Ishiyama, Kazuya Fujimoto, and Tomohiro Sasamoto
   Integral formula for the propagator of the one-dimensional Hubbard model
   J. Phys. A: Math. Theor. 59, 215002 (2026)
9. Toma Yoneya, Kazuya Fujimoto, and Yuki Kawaguchi
   Path-Integral Formulation of Bosonic Markovian Open Quantum Dynamics with Monte Carlo stochastic trajectories using the Glauber-Sudarshan P, Wigner, and Husimi Q Functions and Hybrids
   Ann. Phys. 485, 170325 (2026)
10. Toma Yoneya, Kazuya Fujimoto, and Yuki Kawaguchi
    Path-Integral Formulation of Truncated Wigner Approximation for Bosonic Markovian Open Quantum Systems
    Ann. Phys. 479, 170072 (2025)
11. Taiki Ishiyama, Kazuya Fujimoto, and Tomohiro Sasamoto
    Exact density profile in a tight-binding chain with dephasing noise
    J. Stat. Mech. 033103 (2025)
12. Kazuya Fujimoto and Tomohiro Sasamoto
    Exact Solution of Bipartite Fluctuations in One-Dimensional Fermions
    Phys. Rev. Lett. 134, 067101 (2025)
13. Kazuya Fujimoto and Tomohiro Sasamoto
    Random Matrix Statistics in Propagating Correlation Fronts of Fermions
    Phys. Rev. Lett. 132, 087101 (2024)
14. Kazuya Fujimoto, Ryusuke Hamazaki, and Yuki Kawaguchi
    Impact of Dissipation on Universal Fluctuation Dynamics in Open Quantum Systems
    Phys. Rev. Lett. 129, 110403 (2022)
15. Kazuya Fujimoto, Ryusuke Hamazaki, and Yuki Kawaguchi
    Dynamical Scaling of Surface Roughness and Entanglement Entropy in Disordered Fermion Models
    Phys. Rev. Lett. 127, 090601 (2021)
16. Kazuya Fujimoto, Ryusuke Hamazaki, and Yuki Kawaguchi
    Family-Vicsek Scaling of Roughness Growth in a Strongly Interacting Bose Gas
    Phys. Rev. Lett. 124, 210604 (2020)
17. X. Chai, D. Lao, Kazuya Fujimoto, Ryusuke Hamazaki, Masahito Ueda, and C. Raman
    Magnetic Solitons in a Spin-1 Bose-Einstein Condensate
    Phys. Rev. Lett. 125, 030402 (2020)
18. Nir Navon, Christoph Eigen, Jinyi Zhang, Raphael Lopes, Alexander L Gaunt, Kazuya Fujimoto, Makoto Tsubota, Robert P Smith, and Zoran Hadzibabic
    Synthetic dissipation and cascade fluxes in a turbulent quantum gas
    Science 366, 382 (2019)
19. Kazuya Fujimoto, Ryusuke Hamazaki, and Masahito Ueda
    Flemish Strings of Magnetic Solitons and a Nonthermal Fixed Point in a One-Dimensional Antiferromagnetic Spin-1 Bose Gas
    Phys. Rev. Lett. 122, 173001 (2019)
20. Kazuya Fujimoto, Ryusuke Hamazaki, and Masahito Ueda
    Unconventional Universality Class of One-Dimensional Isolated Coarsening Dynamics in a Spinor Bose Gas
    Phys. Rev. Lett. 120, 073002 (2018)
21. Kazuya Fujimoto and Makoto Tsubota
    Direct and inverse cascades of spin-wave turbulence in spin-1 ferromagnetic spinor Bose-Einstein condensates
    Phys. Rev. A 93, 033620 (2016)
22. Kazuya Fujimoto and Makoto Tsubota
    Bogoliubov-wave turbulence in Bose-Einstein condensates
    Phys. Rev. A 93, 039901 (2015)

Details for the journals of my publications

1. Physical Review Letters: 11 papers
2. Physical Review A: 10 papers
3. Physical Review Research: 4 papers
4. Physical Review B: 1 paper
5. Annals of Physics: 2 papers
6. Science: 1 paper
7. Journal of Statistical Mechanics: Theory and Experiment: 1 paper
8. Journal of Physics A: Mathematical and Theoretical: 1 paper