SUGRA chaotic inflation and moduli stabilisation
Abstract
Chaotic inflation predicts a large gravitational wave signal which can be tested by the upcoming Planck satellite. We discuss a SUGRA implementation of chaotic inflation in the presence of moduli fields, and find that inflation does not work with a generic KKLT moduli stabilisation potential. A viable model can be constructed with a fine-tuned moduli sector, but only for a very specific choice of Kahler potential. Our analysis also shows that inflation models satisfying ∂i W inf=0 for all inflation sector fields φi can be combined successfully with a fine-tuned moduli sector.
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