出版 (Publications)

発表論文:

    Google Scholar

1. Soma Onoda, Osamu Fukushima, Ryusuke Hamazaki, and Okuto Morikawa,
   Eigenstate Thermalization Hypothesis with Projective Representation,
   [arXiv:2509.01931]

2. Shoki Sugimoto, Takahiro Sagawa, and Ryusuke Hamazaki,
   Optimal Work Extraction from Finite-Time Closed Quantum Dynamics,
   [arXiv:2508.20512]

3. Kohei Yoshimura and Ryusuke Hamazaki,
   Quasiprobability Thermodynamic Uncertainty Relation,
   [arXiv:2508.14354]
   
   

4. Mamiko Tatsuta, Yuichiro Matsuzaki, Hiroki Kuji, Ryusuke Hamazaki, and Akira Shimizu,
   Characterization and generation of a SQL-beating cat-like state through repetitive measurements,
   [arXiv:2407.06829]

5. Ken Mochizuki and Ryusuke Hamazaki,
   Transitions of the Lyapunov spectrum and entanglement entropy in monitored quantum dynamics with homogeneous unitary,
   Journal of Physics A: Mathematical and Theoretical, Volume 58, Number 26 [arXiv:2503.20217]
   Invited paper for Special Issue on Open Quantum Thermodynamics

6. Hisanori Oshima, Ken Mochizuki, Ryusuke Hamazaki, and Yohei Fuji,
   Topology and Spectrum in Measurement-Induced Phase Transitions,
   Phys. Rev. Lett. 134, 240401 (2025) [arXiv:2412.11097]
   プレスリリース「量子測定が誘起するトポロジカル相のバルクエッジ対応」
   日本経済新聞でも取り上げていただきました。

7. Kazuki Yamamoto and Ryusuke Hamazaki,
   Measurement-Induced Crossover of Quantum Jump Statistics in Postselection-Free Many-Body Dynamics,
   [arXiv:2503.02418]

8. Ken Mochizuki and Ryusuke Hamazaki,
   Measurement-Induced Spectral Transition,
   Phys. Rev. Lett. 134, 010410 (2025). [arXiv:2406.18234]
   プレスリリース「量子観測に誘起されたスペクトル相転移の発見 －平衡系と非平衡系との非自明な類似点－」
   日本経済新聞でも取り上げていただきました。

9. Ryusuke Hamazaki,
   Speed limits to fluctuation dynamics,
   Communications Physics volume 7, Article number: 361 (2024). [arXiv:2309.07301]

10. Somnath Maity and Ryusuke Hamazaki,
    Kinetically constrained models constructed from dissipative quantum dynamics,
    Phys. Rev. B 110, 014301 (2024). [arXiv:2403.12548]

11. Taro Sawada, Kazuki Sone, Ryusuke Hamazaki, Yuto Ashida, and Takahiro Sagawa,
    Role of Topology in Relaxation of One-Dimensional Stochastic Processes,
    Phys. Rev. Lett. 132, 046602 (2024). [arXiv:2301.09832]
    プレスリリース「確率的ダイナミクスの緩和におけるトポロジーの効果を解明 －古典系のトポロジカルな設計原理の解明に向けて－」
    日本経済新聞でも取り上げていただきました。

12. Ryusuke Hamazaki,
    Quantum Velocity Limits for Multiple Observables: Conservation Laws, Correlations, and Macroscopic Systems,
    Phys. Rev. Research 6, 013018 (2024). [arXiv:2305.03190]
    
    

13. Ken Mochizuki and Ryusuke Hamazaki,
    Absorption to Fluctuating Bunching States in Non-Unitary Boson Dynamics,
    Phys. Rev. Research 6, 013004 (2024). [arXiv:2308.04716]

14. Taiki Haga, Masaya Nakagawa, Ryusuke Hamazaki, and Masahito Ueda,
    Quasiparticles of Decoherence Processes in Open Quantum Many-Body Systems: Incoherentons,
    Phys. Rev. Research 5, 043225 (2023). [arXiv:2211.14991]
    
    

15. Osamu Fukushima and Ryusuke Hamazaki,
    Violation of Eigenstate Thermalization Hypothesis in Quantum Field Theories with Higher-Form Symmetry,
    Phys. Rev. Lett. 131, 131602 (2023). [arXiv:2305.04984]
    
    

16. Kazuki Yamamoto and Ryusuke Hamazaki,
    Localization Properties in Disordered Quantum Many-Body Dynamics under Continuous Measurement
    Phys. Rev. B 197, L220201 (Letter) (2023). [arXiv:2301.07290]
    
    
    

17. Shoki Sugimoto, Ryusuke Hamazaki, and Masahito Ueda,
    Rigorous Bounds on Eigenstate Thermalization,
    [arXiv:2303.10069]

18. Ken Mochizuki and Ryusuke Hamazaki,
    Distinguishability transitions in nonunitary boson-sampling dynamics,
    Phys. Rev. Research 5, 013177 (2023). [arXiv:2207.12624]
    
    

19. Atsuki Yoshinaga, Yuichiro Matsuzaki, and Ryusuke Hamazaki,
    Quantum Metrology Protected by Hilbert Space Fragmentation,
    [arXiv:2211.09567]
    
    

20. Zongping Gong and Ryusuke Hamazaki,
    Bounds in Nonequilibrium Quantum Dynamics,
    International Journal of Modern Physics B, Vol. 36, No. 31, 2230007 (2022). [arXiv:2202.02011] (invited review article)
    
    

21. Kazuya Fujimoto, Ryusuke Hamazaki, and Yuki Kawaguchi,
    Impact of Dissipation on Universal Fluctuation Dynamics in Open Quantum Systems,
    Phys. Rev. Lett. 129, 110403 (2022). [arXiv:2202.02176]

22. Atsuki Yoshinaga, Hideaki Hakoshima, Takashi Imoto, Yuichiro Matsuzaki, and Ryusuke Hamazaki,
    Emergence of Hilbert Space Fragmentation in Ising Models with a Weak Transverse Field,
    Phys. Rev. Lett. 129, 090602 (2022). [arXiv:2111.05586]
    
    

23. Shoki Sugimoto, Ryusuke Hamazaki, and Masahito Ueda,
    Eigenstate Thermalization in Long-Range Interacting Systems,
    Phys. Rev. Lett. 129, 030602 (2022). [arXiv:2111.12484]
    
    

24. Ryusuke Hamazaki, Masaya Nakagawa, Taiki Haga, and Masahito Ueda,
    Lindbladian Many-Body Localization,
    [arXiv:2206.02984]
    
    

25. Kyosuke Adachi, Ryosuke Iritani, and Ryusuke Hamazaki,
    Universal constraint on nonlinear population dynamics,
    Communications Physics 5, 129 (2022). [arXiv:2202.02028]
    プレスリリース「進化・生態ダイナミクスの共通法則 －生物の個体群変化を物理学的な関係式で記述する－」
    
    

26. Ryusuke Hamazaki,
    Speed Limits for Macroscopic Transitions,
    PRX Quantum 3, 020319 (2022). [arXiv:2110.09716]
    プレスリリース「巨視的な遷移における速度限界の発見－連続の式に基づく統一的アプローチ－」
    RIKEN Research Highlights に取り上げていただきました。
    
    

27. Ryusuke Hamazaki,
    Exceptional dynamical quantum phase transitions in periodically driven systems,
    Nature Communications 12, 5108 (2021).  [arXiv:2012.11822]
    Selected in a collection of Quantum Many-Body Dynamics.
    プレスリリース「新しいメカニズムによる動的量子相転移を発見 -反ユニタリー対称性の自発的破れ-」
    マイナビニュースでも取り上げていただきました。

28. 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). [arXiv:2101.08148]
    プレスリリース 「乱れた量子系における粒子数揺らぎと量子もつれの成長則を発見　-コーヒーの染みの広がりとの意外なつながり-」
    マイナビニュースでも取り上げていただきました。
    
    EurekAlert! からの英文記事

29. Taiki Haga, Masaya Nakagawa, Ryusuke Hamazaki, and Masahito Ueda,
    Liouvillian Skin Effect: Slowing Down of Relaxation Processes without Gap Closing,
    Phys. Rev. Lett. 127, 070402 (2021). [arXiv:2005.00824]
    
    

30. Shoki Sugimoto, Ryusuke Hamazaki, and Masahito Ueda,
    Test of Eigenstate Thermalization Hypothesis Based on Local Random Matrix Theory,
    Phys. Rev. Lett. 126, 120602 (2021). [arXiv:2005.06379]
    
    

31. Yosuke Takasu, Tomoya Yagami, Yuto Ashida, Ryusuke Hamazaki, Yoshihito Kuno, and Yoshiro Takahashi,
    PT-symmetric non-Hermitian quantum many-body system using ultracold atoms in an optical lattice with controlled dissipation,
    Progress of Theoretical and Experimental Physics, ptaa094 (2020). [arXiv:2004.05734]
    JPS Hot Topicsによる解説動画
    
    

32. Xiao Chai, Di Lao, Kazuya Fujimoto, Ryusuke Hamazaki, Masahito Ueda, and Chandra Raman,
    Magnetic solitons in a spin-1 Bose-Einstein condensate,
    Phys. Rev. Lett. 125, 030402 (2020). [arXiv:1912.06672]
    
    Selected as Editor's Suggestion.
    Featured in Physics, see also Synopsis in Physics 13, 74 by Christopher Crockett.
    
    

33. Ryusuke Hamazaki, Kohei Kawabata, Naoto Kura and Masahito Ueda,
    Universality classes of non-Hermitian random matrices,
    Phys. Rev. Research, 2, 023286 (2020). [arXiv:1904.13082]
    
    

34. 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). [arXiv:1911.10707]
    
    

35. Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata, and Ryusuke Hamazaki,
    Universal Error Bound for Constrained Quantum Dynamics,
    Phys. Rev. Lett. 124, 210606 (2020). [arXiv:2001.03419]
    
    

36. Zongping Gong, Nobuyuki Yoshioka, Naoyuki Shibata, and Ryusuke Hamazaki,
    Error bounds for constrained dynamics in gapped quantum systems: Rigorous results and generalizations,
    Phys. Rev. A 101, 052122 (2020).  [arXiv:2001.03421]
    
    

37. Ryusuke Hamazaki, Kazuya Fujimoto and Masahito Ueda,
    Operator Noncommutativity and Irreversibility in Quantum Chaos,
    [arXiv:1807.02360]
    
    

38. Ryusuke Hamazaki, Kohei Kawabata and Masahito Ueda,
    Non-Hermitian Many-Body Localization,
    Phys. Rev. Lett. 123, 090603 (2019). [arXiv:1811.11319]
    
    

39. Nobuyuki Yoshioka and Ryusuke Hamazaki,
    Constructing neural stationary states for open quantum many-body systems,
    Phys. Rev. B 99, 214306 (2019). [arXiv:1902.07006]
    
    

Selected as Editor's Suggestion.

Featured in Physics, see also Viewpoint in Physics 12, 74 by Maria Schuld, Ilya Sinayskiy, and Francesco Petruccione.

Kleidoscope

研究室の扉「ニューラルネットワークでみる量子の世界」(YouTubeでの解説)

UTokyoFOCUSでのプレスリリース　「無限時間経過後の量子状態を表すニューラルネットワークの構築に成功」

Quantum research with neural networks (English version)

ニューラルネットワークで「開いた量子系」を学習する – 機械学習と量子物理学の融合（アカデミストジャーナルの解説記事）

Optronicsでも取り上げていただきました。

40. Kazuya Fujimoto, Ryusuke Hamazaki and Masahito Ueda,
    Flemish Strings of Magnetic Solitons and a Non-Thermal Fixed Point in a One-Dimensional Antiferromagnetic Spin-1 Bose Gas,
    Phys. Rev. Lett. 122, 173001 (2019). [arxiv:1812.03581]
    
    

41. Ryusuke Hamazaki and Masahito Ueda,
    Random-matrix behavior of quantum nonintegrable many-body systems with Dyson’s three symmetries,
    Phys. Rev. E 99, 042116 (2019). [arXiv:1901.02119]
    
    

42. Ryusuke Hamazaki and Masahito Ueda,
    Atypicality of Most Few-Body Observables,
    Phys. Rev. Lett. 120, 080603 (2018). [arxiv:1708.04772]
    
    

43. 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). [arxiv:1707.03615]
    
    

44. Zongping Gong, Ryusuke Hamazaki and Masahito Ueda,
    Discrete Time-Crystalline Order in Cavity and Circuit QED Systems,
    Phys. Rev. Lett. 120, 040404 (2018). [arxiv:1708.01472]
    
    

45. Ryusuke Hamazaki, Tatsuhiko N. Ikeda and Masahito Ueda,
    Generalized Gibbs ensemble in a nonintegrable system with an extensive number of local symmetries,
    Phys. Rev. E 93, 032116 (2016). [arxiv:1511.08581]

修士論文:

          Ryusuke Hamazaki,

          Theoretical study on thermalization in isolated quantum systems,

          [arXiv:1901.01481]