407 citations · 983 across the 44 of their papers we have counts for
44 papers
Heavy particle non-decoupling in flavor-changing gravitational interactions
Takeo Inami, Takahiro Kubota
The flavor-changing gravitational process d --> s + graviton, is evaluated at the one-loop level in the standard electroweak theory with on-shell renormalization. The results we pr…
Transformation of Primordial Cosmological Perturbations Under the General Extended Disformal Transformation
Allan L. Alinea, Takahiro Kubota
Primordial cosmological perturbations are the seeds that were cultivated by inflation and the succeeding dynamical processes, eventually leading to the current Universe. In this wo…
Heavy Particle Signatures in Cosmological Correlation Functions with Tensor Modes
Ryo Saito, Takahiro Kubota
We explore the possibility to make use of cosmological data to look for signatures of unknown heavy particles whose masses are on the order of the Hubble parameter during the time…
Adiabatic regularization of power spectrum in nonminimally coupled general single-field inflation
Allan L. Alinea, Takahiro Kubota
We perform adiabatic regularization of power spectrum in nonminimally coupled general single-field inflation with varying speed of sound. The subtraction is performed within the fr…
The double-soft limit in cosmological correlation functions and graviton exchange effects
Allan L. Alinea, Takahiro Kubota, Nobuhiko Misumi
The graviton exchange effect on cosmological correlation functions is examined by employing the double-soft limit technique. A new relation among correlation functions that contain…
Logarithmic divergences in the -inflationary power spectra computed through the uniform approximation
Allan L. Alinea, Takahiro Kubota, Wade Naylor
We investigate a calculation method for solving the Mukhanov-Sasaki equation in slow-roll -inflation based on the uniform approximation (UA) in conjunction with an expansion sch…