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Inflation from a Supersymmetric Axion Model

Published 30 Aug 2010 in hep-ph and astro-ph.CO | (1008.5013v2)

Abstract: We show that a supersymmetric axion model naturally induces a hybrid inflation with the waterfall field identified as a Peccei-Quinn scalar. The Peccei-Quinn scale is predicted to be around 10{15}GeV for reproducing the large-scale density perturbation of the Universe. After the built-in late-time entropy-production process, the axion becomes a dark matter candidate. Several cosmological implications are discussed.

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