R-symmetric Axion/Natural Inflation in Supergravity via Deformed Moduli Dynamics
arXiv:1409.0330 · doi:10.1016/j.physletb.2014.11.009
Abstract
We construct a natural inflation model in supergravity where the inflaton is identified with a modulus field possessing a shift symmetry. The superpotential for the inflaton is generated by meson condensation due to strong dynamics with deformed moduli constraints. In contrast to models based on gaugino condensation, the inflaton potential is generated without -symmetry breaking and hence does not depend on the gravitino mass. Thus, our model is compatible with low scale supersymmetry.
arXiv comment15 pages
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