No-scale supergravity realization of the starobinsky model of inflation

John Ellis, Dimitri V. Nanopoulos, Keith A. Olive

Research output: Contribution to journalArticle

164 Scopus citations

Abstract

We present a model for cosmological inflation based on a no-scale supergravity sector with an SU(2,1)/SU(2)×U(1) Kähler potential, a single modulus T, and an inflaton superfield Φ described by a Wess-Zumino model with superpotential parameters (μ, λ). When T is fixed, this model yields a scalar spectral index ns and a tensor-to-scalar ratio r that are compatible with the Planck measurements for values of λ=μ/3MP. For the specific choice λ=μ/3M P, the model is a no-scale supergravity realization of the R+R2 Starobinsky model.

Original languageEnglish (US)
Article number111301
JournalPhysical Review Letters
Volume111
Issue number11
DOIs
StatePublished - Sep 9 2013

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