activity
20232026
most citedEffective Field Theory of Chiral Gravitational Waves

6 citations · 8 across the 6 of their papers we have counts for

collaborators

6 papers

astro-ph.CO2026

Searching for Axion-like particle Dark Matter with Time-domain Polarization: Constraints from a protoplanetary disk

Kanako Narita, Tomohiro Fujita, Ryo Tazaki +1

Axion-like particles (ALPs) can induce a birefringence effect that rotates the polarization angle of light, offering a probe of ultralight dark matter. We analyze archival near-inf…

astro-ph.CO2025

An Effective Theory for Biased Tracers via the Boltzmann-Equation Approach

Tomohiro Fujita, Tomo Takahashi, Sora Yamashita

We develop an effective theory for biased tracers formulated at the level of the Boltzmann equation, providing a unified description of density and velocity bias. We introduce a ge…

astro-ph.CO2025★ 6 cited

Effective Field Theory of Chiral Gravitational Waves

Katsuki Aoki, Tomohiro Fujita, Ryodai Kawaguchi +1

When a (non-)Abelian gauge field acquires an isotropic background configuration during inflation, strong gravitational waves (GWs) with parity-violating polarization, known as chir…

hep-ph2025

Searches for ultralight vector and axion dark matter with KAGRA

Yuta Michimura, Takumi Fujimori, Hiroki Fujimoto +10

We have proposed using laser interferometric gravitational wave detectors to search for ultralight vector and axion dark matter. Vector dark matter can be probed through oscillatin…

hep-ph2025

Forecast constraints on the axion-photon coupling from interstellar medium heating

Makoto Amakawa, Tomohiro Fujita, Shinji Tsujikawa

In interstellar media characterized by a nonrelativistic plasma of electrons and heavy ions, we study the effect of axion dark matter coupled to photons on the dynamics of an elect…

hep-ph2023★ 2 cited

Exploring spin of ultralight dark matter with gravitational wave detectors

Yusuke Manita, Hiroki Takeda, Katsuki Aoki +2

We propose a novel method for distinguishing the spin of ultralight dark matter (ULDM) using interferometric gravitational wave detectors. ULDM can be a bosonic field of spin-0, 1,…