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arxiv: 1008.5013 · v2 · pith:TKL7DA4Dnew · submitted 2010-08-30 · ✦ hep-ph · astro-ph.CO

Inflation from a Supersymmetric Axion Model

Masahiro Kawasaki , Naoya Kitajima , Kazunori Nakayama This is my paper
classification ✦ hep-ph astro-ph.CO
keywords axioninflationmodelpeccei-quinnsupersymmetricaroundbecomesbuilt-in
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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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