OKAMATSU FUMIYA

College of Humanities and Sciences Department of PhysicsResearch Assistant

Researcher Information

Degree

  • Doctor of Science, Saga University, Mar. 2025

Field Of Study

  • Natural sciences, Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
Research activity information

Paper

  • EFT of dark energy with cosmic chronometers: Reconstructing background EFT functions
    Fumiya Okamatsu; Kazufumi Takahashi
    Physical Review D, Apr. 2026
  • Dark Age Consistency in the 21 cm Global Signal
    Fumiya Okamatsu; Teppei Minoda; Tomo Takahashi; Daisuke Yamauchi; Shintaro Yoshiura
    Physical Review Letters, Sep. 2024
  • $H_0$ tension without CMB data: Beyond the $\Lambda$CDM
    Fumiya Okamatsu; Toyokazu Sekiguchi; Tomo Takahashi
    Physical Review D, Jul. 2021

MISC

  • Casimir-Induced Quintessence in Dark Dimension
    Tomoki Katayama; Hiroki Matsui; Yuri Michinobu; Fumiya Okamatsu; Yutaka Sakamura; Takahiro Terada
    20 Mar. 2026
  • Detectability and Model Discriminability of the Dark Ages 21 cm Global Signal
    Shintaro Yoshiura; Fumiya Okamatsu; Tomo Takahashi
    01 Feb. 2026