Mixed inflaton and curvaton scenario with sneutrinos
YazarŞenoğuz, Vedat Nefer
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KünyeŞENOĞUZ, V.N. (2012). Mixed inflaton and curvaton scenario with sneutrinos. Journal of Cosmology and Astroparticle Physics, Volume 10, 15p.. http://dx.doi.org/10.1088/1475-7516/2012/10/015.
A variation of sneutrino inflation based on chi(2) potential is considered where the inflaton and the late-decaying field are sneutrinos of different generations. The lighter, late-decaying sneutrino dilutes the gravitinos over-produced after inflaton decay and generates the matter asymmetry. It can also significantly contribute to the curvature perturbation, realizing the mixed inflaton-curvaton case. The cosmic microwave background (CMB) observables can distinguish this case from inflation with chi(2) potential, provided that the initial value of the late-decaying sneutrino is either an order of magnitude smaller or larger than the reduced Planck scale.