The curvaton scenario in the MSSM and predictions for non-Gaussianity

Abstract

We provide a model in which both the inflaton and the curvaton are obtained from within the minimal supersymmetric Standard Model, with known gauge and Yukawa interactions. Since now both the inflaton and curvaton fields are successfully embedded within the same sector, their decay products thermalize very quickly before the electroweak scale. This results in two important features of the model: firstly, there will be no residual isocurvature perturbations, and secondly, observable non-Gaussianities can be generated with the non-Gaussianity parameter $f_{\mathrm{NL}}\sim \mathcal{O}(5-1000)$ being determined solely by the combination of weak-scale physics and the Standard Model Yukawas.

4 pages, no figures

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• Visible sector inflation and the right thermal history in light of Planck data
• Probing the Supersymmetric Inflaton and Dark Matter link via the CMB, LHC and XENON1T experiments
• Lensing Bias to CMB Measurements of Compensated Isocurvature Perturbations
• Probing a panoply of curvaton-decay scenarios using CMB data
• Bound on largest $r\lesssim 0.1$ from sub-Planckian excursions of inflaton
• Creating perturbations from a decaying field during inflation
• Revised $f_{\mathrm{NL}}$ parameter in Curvaton Scenario
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