169 citations · 649 across the 29 of their papers we have counts for
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Does Anisotropic "Inflation" Produce a Small Statistical Anisotropy?
Tomohiro Fujita, Ippei Obata
Anisotropic inflation is an interesting model with an U(1) gauge field and it predicts the statistical anisotropy of the curvature perturbation characterized by a parameter .…
Finding the chiral gravitational wave background of an axion-SU(2) inflationary model using CMB observations and laser interferometers
Ben Thorne, Tomohiro Fujita, Masashi Hazumi +3
A detection of B-mode polarization of the Cosmic Microwave Background (CMB) anisotropies would confirm the presence of a primordial gravitational wave background (GWB). In the infl…
Large Tensor Non-Gaussianity from Axion-Gauge Fields Dynamics
Aniket Agrawal, Tomohiro Fujita, Eiichiro Komatsu
We show that an inflation model in which a spectator axion field is coupled to an SU(2) gauge field produces a large three-point function (bispectrum) of primordial gravitational w…
Does the detection of primordial gravitational waves exclude low energy inflation?
Tomohiro Fujita, Ryo Namba, Yuichiro Tada
We show that a detectable tensor-to-scalar ratio on the CMB scale can be generated even during extremely low energy inflation which saturates the BBN bound $ρ_{\rm…