CDM/baryon isocurvature perturbations in a sneutrino curvaton model
CDM/baryon isocurvature perturbations in a sneutrino curvaton model
Matter isocurvature perturbations are strictly constrained from cosmic microwave background observations. We study a sneutrino curvaton model where both cold dark matter (CDM)/baryon isocurvature perturbations are generated. In our model, total matter isocurvature perturbations are reduced since the CDM/baryon isocurvature perturbations compensate for each other. We show that this model …