papers
Publications (3)
astro-ph.CO2016
Probing pre-inflationary anisotropy with directional variations in the gravitational wave background
Yu Furuya, Yuki Niiyama, Yuuiti Sendouda
gr-qc2019
A quantisation procedure in the presence of an initial Kasner singularity: primordial gravitational waves from triaxially anisotropic pre-inflation
Yu Furuya, Yuki Niiyama, Yuuiti Sendouda
gr-qc2019
Non-Fierz-Pauli bimetric theory from quadratic curvature gravity on Einstein manifolds
Yuki Niiyama, Yuya Nakamura, Ryosuke Zaimokuya +2