Naoto Tsuji


    Research Interests

    • Nonequilibrium physics in strongly correlated quantum systems
       - Nonequilibrium phase transition, nonthermal fixed point
       - Nonequilibrium superconductivity, antiferromagnetism
       - Thermalization in an isolated system
    • Numerical simulations
       - Nonequilibrium dynamical mean-field theory and its extensions
       - Continuous-time quantum Monte Carlo
       - Floquet theory

CV

   Oct. 2016 -     JST PRESTO researcher
   Apr. 2015 -     Research scientist at RIKEN CEMS
   Oct. 2012 - Mar. 2015     Assistant Professor at University of Tokyo
   Apr. 2012 - Sep. 2012     Postdoctoral researcher at University of Fribourg
   Apr. 2011 - Mar. 2012     Postdoctoral researcher at ETH Zürich
   Apr. 2008 - Mar. 2011     Ph.D., Department of Physics, University of Tokyo
   Apr. 2008 - Mar. 2011     JSPS Research Fellow
   Apr. 2006 - Mar. 2008     M.Sc., Department of Physics, University of Tokyo
   Apr. 2002 - Mar. 2006     B.Sc., University of Tokyo

Papers

 • Ryusuke Matsunaga, Naoto Tsuji, Kazumasa Makise, Hirotaka Terai, Hideo Aoki, and Ryo Shimano,
    "Polarization-resolved terahertz third-harmonic generation in a superconductor NbN: dominance of Higgs mode beyond the BCS approximation".
    (arXiv:1703.02815)

 • Yuta Murakami, Naoto Tsuji, Martin Eckstein, and Philipp Werner,
    "Nonequilibrium steady states and transient dynamics of superconductors under phonon driving".
    (arXiv:1702.02942)

 • Naoto Tsuji, Tomohiro Shitara, and Masahito Ueda,
    "Out-of-time-order fluctuation-dissipation theorem".
    (arXiv:1612.08781)

 • Yuta Murotani, Naoto Tsuji, and Hideo Aoki,
    "Theory of light-induced resonances with collective Higgs and Leggett modes in multiband superconductors".
    Phys. Rev. B 95, 104503 (2017). (arXiv:1511.05762)

 • Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki,
    "Interplay of Pomeranchuk instability and superconductivity in the two-dimensional repulsive Hubbard model".
    Phys. Rev. B 95, 075109 (2017). (arXiv:1609.05759)

 • Naoto Tsuji, Philipp Werner, and Masahito Ueda,
    "Exact out-of-time-ordered correlation functions for an interacting lattice fermion model".
    Phys. Rev. A 95, 011601(R) (2017). (arXiv:1610.01251)

 • Naoto Tsuji, Yuta Murakami, and Hideo Aoki,
    "Nonlinear light-Higgs coupling in superconductors beyond BCS: Effects of the retarded phonon-mediated interaction".
    Phys. Rev. B 94, 224519 (2016). (arXiv:1606.05024)

 • Andreas J. Herrmann, Naoto Tsuji, Martin Eckstein, and Philipp Werner,
    "Nonequilibrium Dynamical Cluster Approximation study of the Falicov-Kimball Model".
    Phys. Rev. B 94, 245114 (2016). (arXiv:1609.04708)

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Damping of the Collective Amplitude Mode in Superconductors with Strong Electron-Phonon Coupling".
    Phys. Rev. B 94, 115126 (2016). (arXiv:1604.08073)

 • Masahiko G. Yamada, Tomohiro Soejima, Naoto Tsuji, Daisuke Hirai, Mircea Dinca, and Hideo Aoki,
    "First-Principles Design of a Half-Filled Flat Band of the Kagome Lattice in Two-Dimensional Metal-Organic Frameworks".
    Phys. Rev. B 94, 081102(R) (2016). (arXiv:1510.00164)

 • Takahiro Mikami, Sota Kitamura, Kenji Yasuda, Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators".
    Phys. Rev. B 93, 144307 (2016). (arXiv:1511.00755)

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Multiple amplitude modes in strongly-coupled phonon-mediated superconductors".
    Phys. Rev. B 93, 094509 (2016). (arXiv:1511.06105)

 • Masataka Watanabe, Hisato Komatsu, Naoto Tsuji, and Hideo Aoki,
    "Electronic structure of helicoidal graphene: massless Dirac particles on a curved surface with a screw symmetry".
    Phys. Rev. B 92, 205425 (2015). (arXiv:1505.05159)

 • Naoto Tsuji and Hideo Aoki,
    "Theory of Anderson pseudospin resonance with Higgs mode in superconductors".
    Phys. Rev. B 92, 064508 (2015). (arXiv:1404.2711)

 • Motoharu Kitatani, Naoto Tsuji, and Hideo Aoki,
    "FLEX+DMFT approach to the d-wave superconducting phase diagram of the two-dimensional Hubbard model".
    Phys. Rev. B 92, 085104 (2015). (arXiv:1505.04865)

 • Sota Kitamura, Naoto Tsuji, and Hideo Aoki,
    "An interaction-driven topological insulator in fermionic cold atoms on an optical lattice: A design with a density functional formalism".
    Phys. Rev. Lett. 115, 045304 (2015). (arXiv:1411.3345)

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Interaction quench in the Holstein model: Thermalization crossover from electron- to phonon-dominated relaxation".
    Phys. Rev. B 91, 045128 (2015). (arXiv:1407.8288)

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Supersolid phase accompanied by a quantum critical point in the intermediate coupling regime of the Holstein model".
    Phys. Rev. Lett. 113, 266404 (2014). (arXiv:1402.6456)

 • Ryusuke Matsunaga, Naoto Tsuji, Hiroyuki Fujita, Arata Sugioka, Kazumasa Makise, Yoshinori Uzawa, Hirotaka Terai, Zhen Wang, Hideo Aoki, and Ryo Shimano,
    "Light-induced collective pseudospin precession resonating with Higgs mode in a superconductor".
    Science 345, 1145 (2014). Perspective. Press release. UTokyo Research. New Scientist.

 • Naoto Tsuji, Peter Barmettler, Hideo Aoki, and Philipp Werner,
    "Nonequilibrium dynamical cluster theory",
    Phys. Rev. B. 90, 075117 (2014).  (arXiv:1307.5946)

 • Hideo Aoki, Naoto Tsuji, Martin Eckstein, Marcus Kollar, Takashi Oka, and Philipp Werner,
    "Nonequilibrium dynamical mean-field theory and its applications".
    Rev. Mod. Phys. 86, 779 (2014).  (arXiv:1310.5329)

 • 10 Naoto Tsuji and Philipp Werner,
    "Nonequilibrium dynamical mean-field theory based on weak-coupling perturbation expansions: Application to dynamical symmetry breaking in the Hubbard model".
    Phys. Rev. B 88, 165115 (2013).  (arXiv:1306.0307) Editor's Suggestions.

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Ordered phases in the Holstein-Hubbard model: Interplay of strong Coulomb interaction and electron-phonon coupling".
    Phys. Rev. B 88, 125126 (2013).  (arXiv:1305.5771)

 • Naoto Tsuji, Martin Eckstein, and Philipp Werner,
    "Nonthermal antiferromagnetic order and nonequilibrium criticality in the Hubbard model",
    Phys. Rev. Lett. 110, 136404 (2013).  (arXiv:1210.0133)

 • Philipp Werner, Naoto Tsuji, and Martin Eckstein,
    "Nonthermal symmetry-broken states in the strongly interacting Hubbard model",
    Phys. Rev. B 86, 205101 (2012).  (arXiv:1208.0743)

 • Naoto Tsuji, Takashi Oka, Hideo Aoki, and Philipp Werner,
    "Repulsion-to-attraction transition in correlated electron systems triggered by a monocycle pulse",
    Phys. Rev. B 85, 155124 (2012).  (arXiv:1110.2925)

 • 10 10 Naoto Tsuji, Takashi Oka, Philipp Werner, and Hideo Aoki,
    "Dynamical band flipping in fermionic lattice systems: an ac-field driven change of the interaction from repulsive to attractive",
    Phys. Rev. Lett. 106, 236401 (2011).  (arXiv:1008.2594Viewpoint. Editor's Suggestions.

 • Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Nonequilibrium Steady State of Photoexcited Correlated Electrons in the Presence of Dissipation",
    Phys. Rev. Lett. 103, 047403 (2009).  (arXiv:0903.2332)

 • Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism",
    Phys. Rev. B 78, 235124 (2008).  (arXiv:0808.0379)

 • Naoto Tsuji, Shigehiro Takajo, and Hideo Aoki,
    "Large orbital magnetic moments in carbon nanotubes generated by resonant transport",
    Phys. Rev. B 75, 153406 (2007).  (arXiv:cond-mat/0607629)

Proceedings

 • Ryo Shimano, Ryusuke Matsunaga, Yuki Hamada, Arata Sugioka, Hiroyuki Fujita, Kazumasa Makise, Yoshinori Uzawa, Hirotaka Terai, Zhen Wang, Naoto Tsuji, and Hideo Aoki,
    "Higgs Mode and Terahertz Nonlinear Optics in Superconductors",
    Proceedings of 19th International Conference on Ultrafast Phenomena (UP 2014), OSA Technical Digest (Optical Society of America, 2014), 10.Thu.A.1.

 • Yuta Murakami, Philipp Werner, Naoto Tsuji, and Hideo Aoki,
    "Dynamical mean-field analysis of ordered phases in the half-filled Holstein-Hubbard model",
    Proceedings of International Conference on Strongly Correlated Electron Systems (SCES 2013), JPS Conf. Ser. 3, 016023 (2014).  (arXiv:1309.7554)

 • Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Nonequilibrium steady states in correlated electron systems - Photoinduced insulator-metal transition and optical response",
    Proceedings of International Conference on Magnetism 2009 (ICM 2009), J. Phys.: Conf. Ser. 200, 012212 (2010).

 • Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Photoinduced insulator-metal transition in correlated electrons - a Floquet analysis with the dynamical mean-field theory",
    Proceedings of 25th International Conference in Low Temperature Physics (LT 25), J. Phys.: Conf. Ser. 150, 042216 (2009).  (arXiv:0907.1027)

 • Naoto Tsuji, Takashi Oka, and Hideo Aoki,
    "Photoinduced insulator-metal transition and nonlinear optical response of correlated electrons - a DMFT analysis",
    Proceedings of 3rd International Conference on Photoinduced Phase Transitions and Cooperative Phenomena (PIPT 2008), J. Phys.: Conf. Ser. 148, 012058 (2009).  (arXiv:0907.0945)

 • Naoto Tsuji, Shigehiro Takajo, and Hideo Aoki,
    "Large magnetic moments generated from loop currents in carbon nanotube attached to electrondes - a theoretical picture",
    Proceedings of 17th International Conference on High Magnetic fields in semiconductor physics (HMF 2006), Int. J. Mod. Phys. B 21, 1198 (2007).

解説記事

 • 「超伝導体中のヒッグスモード - 高強度テラヘルツ波による検出とヒッグス共鳴第三高調波発生」, 松永隆佑, 辻直人, 青木秀夫, 島野亮, 固体物理, Vol. 50, No. 8, 1(411), 2015.

 • 「非平衡強相関系における斥力・引力転換」, 辻直人, 岡隆史, 青木秀夫, 固体物理 Vol. 48, No. 9, 1(425), 2013.

Links

 • Ueda group at Tokyo University.
 • Quantum Condensed Research Team at RIKEN.
 • RIKEN Center for Emergent Matter Science (CEMS).




Naoto Tsuji
Quantum Condensed Research Team, Quantum Information Electronics Division
RIKEN Center for Emergent Matter Science (CEMS)
E-mail: naoto.tsuji riken.jp
Tel: +81-48-462-1111 (ext. 3169)
Address: 2-1 Hirosawa, Wako, Saitama 351-0198, Japan