83 citations · 390 across the 16 of their papers we have counts for
4 papers · 1 filter
Stochastic tunneling in de Sitter spacetime
Taiga Miyachi, Jiro Soda, Junsei Tokuda
Tunneling processes in de Sitter spacetime are studied by using the stochastic approach. We exploit the Martin-Siggia-Rose-Janssen-de Dominicis (MSRJD) functional integral to obtai…
Cancellation of quantum corrections on the soft curvature perturbations
Yuichiro Tada, Takahiro Terada, Junsei Tokuda
We study the cancellation of quantum corrections on the superhorizon curvature perturbations from subhorizon physics beyond the single-clock inflation from the viewpoint of the cos…
New lower bounds on scattering amplitudes: non-locality constraints
Luca Buoninfante, Junsei Tokuda, Masahide Yamaguchi
Under reasonable working assumptions including the polynomial boundedness, one proves the well-known Cerulus-Martin lower bound on how fast an elastic scattering amplitude can decr…
Gravitational Positivity for Phenomenologists: Dark Gauge Boson in the Swampland
Katsuki Aoki, Toshifumi Noumi, Ryo Saito +4
The gravitational positivity bound gives quantitative "swampland'' constraints on low-energy effective theories inside theories of quantum gravity. We give a comprehensive discussi…