254 citations · 1.8k across the 51 of their papers we have counts for
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astro-ph.CO2013★ 27 cited
Gravitational waves from a curvaton model with blue spectrum
Masahiro Kawasaki, Naoya Kitajima, Shuichiro Yokoyama
We investigate the gravitational wave background induced by the first order scalar perturbations in the curvaton models. We consider the quadratic and axion-like curvaton potential…
hep-ph2013★ 5 cited
Heavy gravitino in hybrid inflation
Masahiro Kawasaki, Naoya Kitajima, Kazunori Nakayama +1
It is known that supersymmetric hybrid inflation model may require severe tunings on the initial condition for large gravitino mass of order 100 - 1000 TeV due to the constant term…