36 citations · 133 across the 6 of their papers we have counts for
6 papers
Slow-roll corrections in multi-field inflation: a separate universes approach
Mindaugas Karčiauskas, Kazunori Kohri, Taro Mori +1
In view of cosmological parameters being measured to ever higher precision, theoretical predictions must also be computed to an equally high level of precision. In this work we inv…
Multi-field effects in a simple extension of inflation
Taro Mori, Kazunori Kohri, Jonathan White
We consider inflation in the system containing a Ricci scalar squared term and a canonical scalar field with quadratic mass term. In the Einstein frame this model takes the form of…
Disformal invariance of curvature perturbation
Hayato Motohashi, Jonathan White
We show that under a general disformal transformation the linear comoving curvature perturbation is not identically invariant, but is invariant on superhorizon scales for any theor…
Multi-field formulation of gravitational particle production after inflation
Yuki Watanabe, Jonathan White
We study multi-field inflation models that contain a non-trivial field-space metric and a non-minimal coupling between the gravity and inflaton sectors. In such models it is known…
Scalar suppression on large scales in open inflation
Jonathan White, Ying-li Zhang, Misao Sasaki
We consider two toy models of open inflation and investigate their ability to give a suppression of scalar power on large scales whilst also satisfying observational constraints on…
Non-linear curvature perturbation in multi-field inflation models with non-minimal coupling
Jonathan White, Masato Minamitsuji, Misao Sasaki
Using the δN formalism we consider the non-linear curvature perturbation in multi-field models of inflation with non-minimal coupling. In particular, we focus on the relation betwe…