University of Tokyo doctor's course: Ryoji Anzaki

Ryoji Anzaki, D3

Department of Nuclear Engineering and Management, School of Engineering, the University of Tokyo


Contact information
E-Mail: anzaki●    (Please replace ● with @.)

Current Research Theme

Correlated electron-nuclear dynamics in molecules under intense laser fields


Master of Engineering
April 2014 – March 2016: Department of Applied Physics, Graduate school of Engineering, the University of Tokyo

Bachelor of Engineering
April 2011 – March 2014: Department of Applied Physics, Faculty of Engineering, the University of Tokyo

Associate of Chemical Engineering
April 2006 – March 2011: Osaka Prefectural College of Technology


Master Thesis
I mainly concentrated on the numerical study of the quantum field theory using the stochastic quantization method during my master’s program. My collaborators and I developed a new method to calculate the contribution of the nonlinear (quartic) term in the scaler field in one- and three-dimensional discretized space-time, using the complex Langevin equation. This method, now called RPSA (Restricted Phase-Space Approximation), enabled us to estimate the nonlinear effects in non-equilibrium cases.

I focused on the experiments in the realm of quantum information, and performed an experiment to determine the behavior of interferometer made of micro-size thin membrane of sapphire amorphous.


Poster session

“Real-time stochastic quantization in scalar fields”, at CMSI (Computational Materials Science Initiative) meeting, the University of Tokyo Hongo Campus, March 18, 2015

“Full Quantum Mechanical Simulation of One-dimensional Hydrogen Molecular Ion in an Intense Laser Field”, The 8th Asian Workshop on Generation and Application of Coherent XUV and X-ray Radiation (8th AWCXR), National Tsing Hua University, Hsinchu, Taiwan 2017/3/27-29

“Generic real-time quantum dynamics of molecules with time-dependent multiconfiguration self-consistent field methods”, 2nd International Symposium on Attosecond Science, Suzuki Umetaro Hall, Riken, Saitama, Japan, Aug. 26, 2017

“Gauge Invariance beyond the Electric Dipole Approximation”, he 9th Asian Workshop on Generation and Application of Coherent XUV and X- ray Radiation (9th AWCXR), Hokkaido University, October 15, 2018


International Chemistry Olympiad, Japan Representative Candidate (2008)


  1. Ryoji Anzaki, Takeshi Sato, Kenichi L. Ishikawa, Fully General Time-Dependent Multiconfiguration Self-Consistent-Field Method for the Electron-Nuclear Dynamics, Phys. Chem. Chem. Phys., 19, 22008~22015 (2017). (DOI: 10.1039/C7CP02086D)


Anzaki, R., Fukushima, K., Hidaka, Y., & Oka, T. (2015). Restricted phase-space approximation in real-time stochastic quantization. Annals of Physics, 353, 107-128.


I have some basis in numerical simulations and quantum physics, especially in the quantum field theory. However, I am completely new to the world of attosecond dynamics of molecules under the influences of intense laser fields. Thus, to become a member of Ishikawa Lab. was a challenging decision for me. Now I am really satisfied with the members from wide varieties of backgrounds, such as chemistry, experimental physics, as well as theoretical physics. I am also motivated by the ambitious research topics in this laboratory.