347 citations · 887 across the 11 of their papers we have counts for
4 papers · 1 filter
Laser-interferometric Detectors for Gravitational Wave Background at 100 MHz : Detector Design and Sensitivity
Atsushi Nishizawa, Seiji Kawamura, Tomotada Akutsu +8
Recently, observational searches for gravitational wave background (GWB) have developed and given direct and indirect constraints on the energy density of GWB in a broad range of f…
A Null Test of the Cosmological Constant
Takeshi Chiba, Takashi Nakamura
We provide a consistency relation between cosmological observables in general relativity with the cosmological constant. Breaking of this relation at any redshift would imply the b…
Effective Search Templates for a Primordial Stochastic Gravitational Wave Background
Takeshi Chiba, Yoshiaki Himemoto, Masahide Yamaguchi +1
We calculate the signal-to-noise ratio (SNR) of the stochastic gravitational-wave background in an extreme case that its spectrum has a sharp falloff with its amplitude close to th…
A Consistency Relation in Cosmology
Takeshi Chiba, Ryuichi Takahashi
We provide a consistency relation between cosmological observables in general relativity without relying on the equation of state of dark energy. The consistency relation should be…