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arXiv · 0904.2826

Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton

Chia-Min Lin·Kingman Cheung
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Abstract

In this paper, we consider large non-Gaussianity generated after D-term inflation in the case that the adiabatic curvature perturbation produced is dominated by a right-handed (RH) sneutrino curvaton. The cosmic string problem can also be evaded with around 10% contribution to the CMB power spectrum and the spectral index $n_s \simeq 1$. The non-Gaussianity produced can be as large as $10<f_{NL}<100$ for the right-handed sneutrino mass being around $m_Φ=10 {GeV}$ with the Yukawa coupling $λ_ν\sim 10^{-10}$. In this case, the lightest neutrino mass is $10^{-10}{eV}$ which favors RH sneutrino leptogenesis.

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Chia-Min Lin, Kingman Cheung. 2013-10-31. Large non-Gaussianity generated after D-term Inflation by Right-Handed Sneutrino Curvaton. https://doi.org/10.1088/1475-7516%2F2009%2F06%2F006

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