Supersymmetry mechanism for naturally small density perturbations and baryogenesis

We propose a mechanism by which density perturbations δρ/ρ-10 -4 and a baryon asymmetry n B /s ∼10 -10 can naturally be generated in any realistic supersymmetric theory. By «naturally» we mean that the coefficient λ in the usual toy-model inflationary potential V=λO 4 is related to the superpotential Yukama coupling λ e which generates the electron mass. We identify a nine-parameter «quasiflat» direction which generates δρ/ρ through chaotic inflation and which leads to an AflReck-Dine valley (flat direction) where primordial baryogenesis occurs