摘要
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 <sub>s</sub> ≃ 1. The non-Gaussianity produced can be as large as 10 < f <sub>NL</sub> < 100 for the right-handed sneutrino mass being around m <sub>Φ</sub> = 100GeV with the Yukawa coupling λ <sub>ν</sub> ∼ 10 <sup>-10</sup> . In this case, the lightest neutrino mass is 10 <sup>-10</sup> eV which favors RH sneutrino leptogenesis. © 2009 IOP Publishing Ltd and SISSA.