162 citations · 2k across the 45 of their papers we have counts for
45 papers
Inflationary gravitational waves in consistent Einstein-Gauss-Bonnet gravity
Katsuki Aoki, Mohammad Ali Gorji, Shuntaro Mizuno +1
We study the slow-roll single field inflation in the context of the consistent Einstein-Gauss-Bonnet gravity that was recently proposed in \cite{Aoki:2020lig}. In addition…
Universal Upper Bound on the Inflationary Energy Scale from the Trans-Planckian Censorship Conjecture
Shuntaro Mizuno, Shinji Mukohyama, Shi Pi +1
We study the constraint on the inflationary energy scale from the recently proposed Trans-Planckian Censorship Conjecture (TCC). We find a universal upper bound on the inflationary…
Primordial Tensor Non-Gaussianity from Massive Gravity
Tomohiro Fujita, Shuntaro Mizuno, Shinji Mukohyama
We calculate tensor bispectrum in a theory of massive tensor gravitons which predicts blue-tilted and largely amplified primordial gravitational waves. We find that a new 3-point i…
Hyperbolic field space and swampland conjecture for DBI scalar
Shuntaro Mizuno, Shinji Mukohyama, Shi Pi +1
We study a model of two scalar fields with a hyperbolic field space and show that it reduces to a single-field Dirac-Born-Infeld (DBI) model in the limit where the field space beco…
-attractor-type Double Inflation
Kei-ichi Maeda, Shuntaro Mizuno, Ryota Tozuka
We study the background dynamics and primordial perturbation in -attractor-type double inflation. The model is composed of two minimally coupled scalar fields, where each of the…
Blue-tilted Primordial Gravitational Waves from Massive Gravity
Tomohiro Fujita, Sachiko Kuroyanagi, Shuntaro Mizuno +1
We study a theory of massive tensor gravitons which predicts blue-tilted and largely amplified primordial gravitational waves. After inflation, while their mass is significant unti…