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arXiv · 1401.2579

N-flation with Hierarchically Light Axions in String Compactifications

Michele Cicoli·Koushik Dutta·Anshuman Maharana
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Abstract

We present an explicit embedding of axionic N-flation in type IIB string compactifications where most of the Kahler moduli are stabilised by perturbative effects, and so are hierarchically heavier than the corresponding N >> 1 axions whose collective dynamics drives inflation. This is achieved in the framework of the LARGE Volume Scenario for moduli stabilisation. Our set-up can be used to realise a model of either inflation or quintessence, just by varying the volume of the internal space which controls the scale of the axionic potential. Both cases predict a very high scale of supersymmetry breaking. A viable reheating of the Standard Model degrees of freedom can be achieved after the end of inflation due to the perturbative decay of the N light axions which drive inflation.

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Michele Cicoli, Koushik Dutta, Anshuman Maharana. 2015-07-23. N-flation with Hierarchically Light Axions in String Compactifications. https://doi.org/10.1088/1475-7516%2F2014%2F08%2F012

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