Curriculum vitae

Information

• Name: Ryui Kaneko

• Gender: Male

• Citizenship: Japan

• portrait

Research interests

• Condensed matter physics

  • Strongly correlated electron systems

  • Geometrically frustrated systems

  • Quantum spin liquid

    • Kitaev materials

    • Triangular antiferromagnets

    • Kagome antiferromagnets

    • Organic charge transfer salts

• Atomic, molecular, and optical physics

  • Quantum simulation

  • Real-time dynamics

• Statistical physics

  • Critical phenomena

  • Exactly solvable models

    • Classical spin liquid

    • Deconfined quantum criticality

• Computational physics

  • Numerical methods for strongly correlated systems based on variational wave functions

    • Tensor-network methods

    • Variational Monte Carlo method

Numerical methods that I often use

• Tensor-network methods

  • Matrix product states

  • Projected entangled pair states (using TeNeS, PEPS contraction for pTNS/TeNeS)

• Monte Carlo methods

  • Variational Monte Carlo method (using mVMC: noninteracting, from mean-field solutions, spin liquid, spin Jastrow)

  • Classical Monte Carlo method (codes)

• Exact diagonalization method (python/julia codes, central charge, real-time dynamics, using QuSpin)

• Mean-field approximations (Hartree-Fock for Fermi-Hubbard, Gutzwiller for Bose-Hubbard), other approximations (spin wave, bond operator)

Employment

• Research Institute for Science and Engineering, Waseda University, Researcher (Associate Professor) (in the group of Prof. Masahito Mochizuki and Prof. Masatoshi Imada), since April 2023.

• Faculty of Science and Technology, Department of Engineering and Applied Sciences, Sophia University, Visiting Associate Professor (in the group of Prof. Tomi Ohtsuki), since April 2023.

• Department of Physics, Kindai University, Postdoctoral researcher (in the group of Prof. Ippei Danshita), April 2020 to March 2023.

• Institute for Solid State Physics, University of Tokyo, Postdoctoral researcher (in the group of Prof. Naoki Kawashima), April 2017 to March 2020.

• WPI Center for Materials Nanoarchitectonics, National Institute for Materials Science, Postdoctoral researcher (in the group of Prof. Masanori Kohno), October 2016 to March 2017.

• Institut für Theoretische Physik, Goethe-Universität Frankfurt, Postdoctoral researcher (in the group of Prof. Claudius Gros and Prof. Roser Valentí), June 2014 to August 2016.

• Department of Applied Physics, Faculty of Engineering, University of Tokyo, Postdoctoral researcher (in the group of Prof. Masatoshi Imada), April 2014 to May 2014.

Education

• Ph.D. in Engineering, Department of Applied Physics, Faculty of Engineering, University of Tokyo, March 2014.

• Master of Engineering, Department of Applied Physics, Faculty of Engineering, University of Tokyo, March 2011.

• Bachelor of Science, Department of Physics, Graduate School of Science, Tokyo Institute of Technology, March 2009.

Teaching (Tutorials)

• "Quantum Mechanics", Prof. W. Hofstetter, Goethe University, April 2016 to July 2016.

• "Introduction to Programming for Physicists", Prof. E. Engel, Goethe University, October 2015 to February 2016 (leftover).

• "Introduction to Programming for Physicists", Prof. E. Engel, Goethe University, October 2014 to February 2015 (leftover).

• "Exercises in Applied Physics (Quantum Mechanics)", University of Tokyo, October 2011 to February 2012.

• "Exercises in Applied Physics (Quantum Mechanics)", University of Tokyo, April 2010 to August 2010.

• "Exercises in General Physics (Electromagnetism)", Tokyo Institute of Technology, October 2008 to February 2009.

Awards

• The 28th Outstanding Paper Award of the Physical Society of Japan, Jan. 2023, "Gapless Spin-Liquid Phase in an Extended Spin 1/2 Triangular Heisenberg Model", J. Phys. Soc. Jpn. 83, 093707 (2014), Ryui Kaneko, Satoshi Morita, and Masatoshi Imada. (https://www.jps.or.jp/activities/awards/ronbunsyo/ronbun28-2023.php)

• Poster prize at the 20th International Conference on Magnetism (ICM2015), July 2015. (http://www.barcelocongresos.com.es/archivo/2015ICM/best_posters_friday.html, http://icm2015.org/best_posters_friday.html)

• Journal of the Physical Society of Japan, Most Cited Articles in 2016 from Vol. 84 (2015), "Quantum Spin Liquid in Spin 1/2 J1–J2 Heisenberg Model on Square Lattice: Many-Variable Variational Monte Carlo Study Combined with Quantum-Number Projections", Satoshi Morita, Ryui Kaneko, and Masatoshi Imada, J. Phys. Soc. Jpn. 84, 024720 (2015). (https://journals.jps.jp/page/jpsj/mc1y_2016)

• Journal of the Physical Society of Japan, Most Cited Articles in 2015 from Vol. 83 (2014), "Gapless Spin-Liquid Phase in an Extended Spin 1/2 Triangular Heisenberg Model", Ryui Kaneko, Satoshi Morita, and Masatoshi Imada, J. Phys. Soc. Jpn. 83, 093707 (2014). (https://journals.jps.jp/page/jpsj/mc1y_2015)

• Poster prize at the third Computational Materials Science Initiative (CMSI) Meeting, December 2012. (http://www.cms-initiative.jp/ja/news/news-cmsiprize2012)

Fellowships

• Grant-in-Aid for Early-Career Scientists, April 2021 to March 2024. (https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K13855/)

• Grant-in-Aid for JSPS Fellows, Japan Society for the Promotion of Science (JSPS) Research Fellowships for Young Scientists (DC1), April 2011 to March 2014. (https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11J01381/)