934 citations · 12.9k across the 205 of their papers we have counts for
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QFT in the flat chart of de Sitter space
Yusuke Korai, Takahiro Tanaka
We study the correlators for interacting quantum field theory in the flat chart of de Sitter space at all orders in perturbation. The correlators are calculated in the in-in formal…
Impact of the second order self-forces on the dephasing of the gravitational waves from quasi-circular extreme mass-ratio inspirals
Soichiro Isoyama, Ryuichi Fujita, Norichika Sago +2
The accurate calculation of long-term phase evolution of gravitational wave (GW) forms from extreme (intermediate) mass ratio inspirals (E(I)MRIs) is an inevitable step to extract…
Strong restriction on inflationary vacua from the local gauge invariance I: Local gauge invariance and infrared regularity
Takahiro Tanaka, Yuko Urakawa
The primordial perturbation is widely accepted to be generated through the vacuum fluctuation of the scalar field which drives inflation. It is, however, not completely clear what…
Gravitational Waves from Quasi-Circular Black Hole Binaries in Dynamical Chern-Simons Gravity
Kent Yagi, Nicolas Yunes, Takahiro Tanaka
Dynamical Chern-Simons gravity cannot be strongly constrained with current experiments because it reduces to General Relativity in the weak-field limit. This theory, however, intro…
Slowly Rotating Black Holes in Dynamical Chern-Simons Gravity: Deformation Quadratic in the Spin
Kent Yagi, Nicolas Yunes, Takahiro Tanaka
We derive a stationary and axisymmetric black hole solution to quadratic order in the spin angular momentum. The previously found, linear-in-spin terms modify the odd-parity sector…
Gravitational-wave standard siren without redshift identification
Atsushi Nishizawa, Kent Yagi, Atsushi Taruya +1
Proposed space-based gravitational-wave (GW) detectors such as DECIGO and BBO will detect neutron-star (NS) binaries and determine the luminosity distances to the binari…