162 citations · 2k across the 45 of their papers we have counts for
6 papers · 1 filter
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…
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…
Modified gravity inside astrophysical bodies
Ryo Saito, Daisuke Yamauchi, Shuntaro Mizuno +2
Many theories of modified gravity, including the well studied Horndeski models, are characterized by a screening mechanism that ensures that standard gravity is recovered near astr…
Inflaton perturbations in brane-world cosmology with induced gravity
Kazuya Koyama, Shuntaro Mizuno
We study cosmological perturbations in the brane models with an induced Einstein-Hilbert term on a brane. We consider an inflaton confined to a de Sitter brane in a five-dimensiona…
Correspondence between Loop-inspired and Braneworld Cosmology
Edmund J. Copeland, James E. Lidsey, Shuntaro Mizuno
Braneworld scenarios are motivated by string/M-theory and can be characterized by the way in which they modify the conventional Friedmann equations of Einstein gravity. An alternat…
Effective Gravitational Equations on Brane World with Induced Gravity
Kei-ichi Maeda, Shuntaro Mizuno, Takashi Torii
We present the effective equations to describe the four-dimensional gravity of a brane world, assuming that a five-dimensional bulk spacetime satisfies the Einstein equations and g…