My long-term interest is to understand the essential ideas behind physical phenomena in the universe as simply and clearly as possible. With this in mind, I have recently been learning numerical techniques to study nonlinear dynamics, which often appears but is difficult to analyze. Developing the ability to simulate such dynamics myself is one of my current goals.
Research field: high energy physics in the early universe.
In particular, probing the early universe with primordial magnetic fields.
Also, quantum computing for cosmology.
Papers
Hajime Fukuda*, Yuta Hamada, Kohei Kamada, Kyohei Mukaida, and FU, Magnetic Helicity, Magnetic Monopoles, and Higgs Winding, JHEP 03 (2026) 127 [inspire]
PMF
Yuta Hamada, Kyohei Mukaida, and FU*, Revisiting constraints on magnetogenesis from baryon asymmetry, Phys. Rev. D 113 (2026) 083522 [inspire]
PMF
Yuta Hamada, Kyohei Mukaida, and FU*, Symmetries of Hot SM, Magnetic Flux & Baryogenesis from Helicity Decay, JHEP 01 (2026) 040 [inspire]
PMF
FU*, Koichi Miyamoto, Soichiro Yamazaki, Kotaro Fujisawa, and Naoki Yoshida, Quantum simulation of Burgers turbulence: Nonlinear transformation and direct evaluation of statistical quantities [inspire]
QC
FU*, Kohei Kamada, and Hiroyuki Tashiro, Revisiting constraints on primordial magnetic fields from spectral distortions of cosmic microwave background, Phys. Lett. B 865 (2025) 139456 [inspire]
PMF
FU*, Motoko Fujiwara, Kohei Kamada, and Jun'ichi Yokoyama, New comprehensive description of the scaling evolution of the cosmological magneto-hydrodynamic system, JCAP 08 (2025) 017 [inspire]
PMF
MHD
Kazuki Yanagihara*, FU, Tomohiro Fujita, and Shinji Tsujikawa, Low-Scale Inflationary Magnetogenesis without Baryon Isocurvature Problem, Phys. Rev. D 110 (2024) 083506 [inspire]
PMF
Koichi Miyamoto*, Soichiro Yamazaki, FU, Kotaro Fujisawa, and Naoki Yoshida, Quantum algorithm for the Vlasov simulation of the large-scale structure formation with massive neutrinos, Phys. Rev. Res. 6 (2024) 013200 [inspire]
QC
Soichiro Yamazaki*, FU, Kotaro Fujisawa, Koichi Miyamoto, and Naoki Yoshida, Quantum algorithm for collisionless Boltzmann simulation of self-gravitating systems, Computers & Fluids 288 (2025) 106527 [inspire]
QC
FU*, Motoko Fujiwara, Kohei Kamada, and Jun'ichi Yokoyama, New description of the scaling evolution of the cosmological magneto-hydrodynamic system, Phys. Lett. B 843 (2023) 138002 [inspire]
PMF
MHD
Kohei Kamada, FU*, and Jun'ichi Yokoyama, Baryon isocurvature constraints on the primordial hypermagnetic fields, JCAP 04 (2021) 034 [inspire]
PMF
tags:
PMF
(primordial magnetic field),
MHD
(magneto-hydrodynamics),
QC
(quantum computing),
"*" indicates the corresponding author.
Invited talk, “Should the cosmological magnetic field originate from inflation?”, Non-perturbative methods in inflation, University of Barcelona, Barcelona, Spain, Dec. 2025.
Invited talk, “Primordial magnetic fields during the electroweak crossover and baryogenesis from magnetic helicity decay”, IBS conference on Dark World, Institute for Basic Science (IBS), Daejeon, Korea, Oct. 2025.
Contributed talk, “Quantum algorithm for statistical quantities in Burgers turbulence”, High Energy Physics in the Quantum Era, High Energy Accelerator Research Organization (KEK), Ibaraki, Japan, Dec. 2024.
Contributed talk, "Hosking integral and its implications for primordial magnetic fields", COSMO24, Kyoto University, Kyoto, Japan, Oct. 2024.
Contributed talk, "Primordial magnetic fields during the electroweak crossover and baryogenesis from magnetic helicity decay", 2026 KPS Spring Meeting, Daejeon Convention Center, Daejeon, Korea, Apr. 2026.
Contributed talk [lang: Japanese],「電弱クロスオーバー中の宇宙磁場」, 基研研究会 素粒子物理学の進展 2025, Yukawa Institute for Theoretical Physics, Kyoto, Japan, Sep. 2025.
Poster [lang: Japanese],「Hosking積分と磁気乱流」, 基研研究会 熱場の量子論とその応用, Yukawa Institute for Theoretical Physics, Kyoto, Japan, Sep. 2024.
Contributed talk [lang: Japanese], "Hosking integral and its implications for constraining primordial magnetic fields", 基研研究会 素粒子物理学の進展 2024, Yukawa Institute for Theoretical Physics, Kyoto, Japan, Aug. 2024.
Contributed talk [lang: Japanese], 「Cole-Hopf 変換を用いたバーガース流体統計量の量子計算」, 第3回 Quantum CAE 研究会, Global Research and Development Center for Business by Quantum-AI technology (G-QuAT), AIST, Tokyo, Japan, May 2026.
Seminar, “Primordial magnetic fields during the electroweak crossover and baryogenesis from magnetic helicity decay”, seminar, Particle Theory and Cosmology Group of Tohoku University, Miyagi, Japan, Feb. 2026.
Contributed talk, “Primordial magnetic fields during the electroweak crossover and baryogenesis from magnetic helicity decay”, High1 Workshop on Particle, String and Cosmology, High1 Resort, Gohan, Korea, Feb. 2026.
Seminar, “Primordial magnetic fields during the electroweak crossover and baryogenesis from magnetic helicity decay”, seminar, Département de physique théorique, University of Geneva, Switzerland, Dec. 2025.
Seminar [Online], “Primordial magnetic fields (and baryogenesis) during the electroweak crossover”, seminar, University of California, Los Angeles (UCLA), US, Oct. 2025.
Seminar, “Primordial magnetic fields during the electroweak crossover”, Joint Seminar, Science Tokyo, Tokyo, Japan, Aug. 2025.
Seminar [lang: Japanese], “Exploring nonlinear evolution of primordial magnetic fields”, Cosmology Group of Nagoya University, Aichi, Japan, Mar. 2025.
Seminar, “Attempts for quantum computing in cosmology”, Particle Theory and Cosmology Group of Tohoku University, Miyagi, Japan, Feb. 2025.
Seminar, “Implications from spatial fluctuations of primordial magnetic helicity”, seminar, DESY Theory Group, Hamburg, Germany, Oct. 2024.
Seminar, “Quantum algorithm for collisionless Boltzmann simulation”, High energy physics theory group of the University of Tokyo, Tokyo, Japan, May. 2023.
Seminar, “On the evolution of the primordial magnetic field”, Cosmology group of Carnegie Mellon University, Pennsylvania, US, Mar. 2023.
Seminar [Online], “Analytic description of the evolution of the primordial magnetic field”, High energy theory group of Keio University, Feb. 2023.
Seminar, “Toward the description of the evolution of the primordial magnetic field”, Cosmology group of Arizona State University, Arizona, US, Feb. 2023.
Seminar, “BBN constraint on the origin of the cosmological magnetic field”, Cosmology group of Tokyo Institute of Technology, Tokyo, Japan, Nov. 2022.
Seminar [lang: Japanese],「初期磁場に対するビッグバン元素合成からの制限」, High energy physics theory group of Saitama University, Saitama, Japan, Nov. 2022.
Contributed talk [Online], “Magneto-hydrodynamic evolution of the cosmological magnetic fields”, RESCEU Summer School 2022, Aug. 2021.
Contributed talk [Online], “Dynamics of the magnetized plasma in the early universe”, RESCEU Summer School 2021, Aug. 2021.
Contributed talk [Online], “A baryogenesis scenario from helical magnetic fields and constraints on it”, RESCEU Summer School 2020, Aug. 2020.