35 citations · 59 across the 4 of their papers we have counts for
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astro-ph.CO2012★ 21 cited
Non-Gaussian isocurvature perturbations in dark radiation
Etsuko Kawakami, Masahiro Kawasaki, Koichi Miyamoto +2
We study non-Gaussian properties of the isocurvature perturbations in the dark radiation, which consists of the active neutrinos and extra light species, if exist. We first derive…
astro-ph.CO2009★ 35 cited
Non-Gaussianity from Isocurvature Perturbations : Analysis of Trispectrum
Etsuko Kawakami, Masahiro Kawasaki, Kazunori Nakayama +1
Non-Gaussianity may exist in the CDM isocurvature perturbation. We provide general expressions for the bispectrum and trispectrum of both adiabatic and isocurvature pertubations. W…