Towards Axionic Starobinsky-like Inflation in String Theory
arXiv:1503.01607 · doi:10.1016/j.physletb.2015.05.001
Abstract
It is shown that Starobinsky-like potentials can be realized in non-geometric flux compactifications of string theory, where the inflaton involves an axion whose shift symmetry can protect UV-corrections to the scalar potential. For that purpose we evaluate the backreacted, uplifted F-term axion-monodromy potential, which interpolates between a quadratic and a Starobinsky-like form. Limitations due to the requirements of having a controlled approximation of the UV theory and of realizing single-field inflation are discussed.
6 pages, 6 figures; v2: important corrections, results modified, references added
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