Wess–Zumino inflation in light of Planck
- Croon, Djuna
- Ellis, John
- Mavromatos, Nick E.
DOIAbstract
AbstractWe discuss cosmological inflation in the minimal Wess–Zumino model with a single massive chiral supermultiplet. With suitable parameters and assuming a plausible initial condition at the start of the inflationary epoch, the model can yield scalar perturbations in the Cosmic Microwave Background (CMB) of the correct strength with a spectral index ns∼0.96 and a tensor-to-scalar perturbation ratio r<0.1, consistent with the Planck CMB data. We also discuss the possibility of topological inflation within the Wess–Zumino model, and the possibility of combining it with a seesaw model for neutrino masses. This would violate R-parity, but at such a low rate that the lightest supersymmetric particle would have a lifetime long enough to const...
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