122 citations · 1k across the 49 of their papers we have counts for
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Axion-Gauge Field Dynamics with Backreaction
Koji Ishiwata, Eiichiro Komatsu, Ippei Obata
Phenomenological success of inflation models with axion and SU(2) gauge fields relies crucially on control of backreaction from particle production. Most of the previous study only…
Ultralight dark matter searches with KAGRA gravitational wave telescope
Yuta Michimura, Tomohiro Fujita, Jun'ya Kume +5
Among various dark matter candidates, bosonic ultralight fields with masses below 1~eV are well motivated. Recently, a number of novel approaches have been put forward to search fo…
First observation and analysis of DANCE: Dark matter Axion search with riNg Cavity Experiment
Yuka Oshima, Hiroki Fujimoto, Masaki Ando +9
Dark matter Axion search with riNg Cavity Experiment (DANCE) was proposed to search for axion dark matter [Phys. Rev. Lett. 121, 161301 (2018)]. We aim to detect the rotation and o…
Dark matter Axion search with riNg Cavity Experiment DANCE: Design and development of auxiliary cavity for simultaneous resonance of linear polarizations
Hiroki Fujimoto, Yuka Oshima, Masaki Ando +4
Axion-like particles (ALPs) are undiscovered pseudo-scalar particles that are candidates for ultralight dark matter. ALPs interact with photons slightly and cause the rotational os…
Gravitational wave trispectrum in the axion-SU(2) model
Tomohiro Fujita, Kai Murai, Ippei Obata +1
We study the trispectrum of the gravitational waves (GWs) generated through the dynamics of an axionic spectator field and SU(2) gauge fields during inflation. In non-Abelian gauge…
Implications of the Cosmic Birefringence Measurement for the Axion Dark Matter Search
Ippei Obata
We show that a recent constraint on the cosmic birefringence effect due to dark energy can be related to the constraints on the coupling of axion dark matter to photon, by relying…