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Hierarchical Axion Inflation

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arxiv 1404.7773 v2 pith:LO2JOZAS submitted 2014-04-30 hep-th astro-ph.COhep-ph

Ido Ben-Dayan , Francisco Gil Pedro , Alexander Westphal This is my paper · ORCID
classification hep-thastro-ph.COhep-ph
keywords axiondecayinflationminimalsub-planckiantheoryaxionsconstant
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We propose a new field theory mechanism for generating an effective trans-Planckian decay constant from sub-Planckian ones. Using the minimal two axions and a hierarchy between two axion decay constants is sufficient for realizing inflation through non-perturbative effects only and with minimal tuning. The inflationary motion is kept entirely within a sub-Planckian domain. We outline possible strategies of embedding the model in a string theory setup.

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  1. Tilt and Tensor-to-Scalar Ratio in Multi-Scalar Field Inflation: Non-Sum-Separable Case

    gr-qc 2024-12 reject novelty 3.0 of 10

    A two-field chaotic inflation model with a kinetic-potential coupling can in principle lower ns and r, but the paper's analytic formulas miscompute the correction and its quoted parameter ranges are fitted rather than...

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