Right-Handed Sneutrino Curvaton and non-Gaussianity

Details Right-Handed Sneutrino Curvaton and non-Gaussianity Right-Handed Sneutrino Curvaton and non-Gaussianity

2009-11-25

arxiv.org/abs/0911.4749v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 2 figures

Scientific paper

In this paper, we explore the parameter space for a Right-Handed (RH) sneutrino curvaton that can generate large non-Gaussianity without assuming any particular inflation sector. The mass of the RH sneutrino is suggested from a discussion on the initial condition of the curvaton field. It is shown that a small Yukawa coupling is generally required for a successful RH sneutrino curvaton. However, the Yukawa coupling can be larger if we consider the braneworld scenario. Some general discussion about the spectral index in curvaton scenario is also provided.

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