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arXiv · 1503.07912

Winding out of the Swamp: Evading the Weak Gravity Conjecture with F-term Winding Inflation?

Arthur Hebecker·Patrick Mangat·Fabrizio Rompineve·Lukas T. Witkowski
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Abstract

We present a new model of large field inflation along a winding trajectory in the field space of two axionic fields, where the 'axions' originate from the complex structure moduli sector of a Calabi-Yau 3-fold at large complex structure. The winding trajectory arises from fixing one combination of axions by bulk fluxes and allows for a transplanckian effective field range. The inflaton potential arises from small 'instantonic' corrections to the geometry and realises natural inflation. By working in a regime of large complex structure for two complex structure moduli the inflaton potential can be made subdominant without severe tuning. We also discuss the impact of the recent 'no-go theorems' for transplanckian axion periodicities on our work. Interestingly, our setup seems to realise a loophole pointed out in arXiv:1503.00795 and arXiv:1503.04783: our construction is a candidate for a string theory model of large field inflation which is consistent with the mild form of the weak gravity conjecture for axions.

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Arthur Hebecker, Patrick Mangat, Fabrizio Rompineve, Lukas T. Witkowski. 2015-03-26. Winding out of the Swamp: Evading the Weak Gravity Conjecture with F-term Winding Inflation?. https://arxiv.org/abs/1503.07912

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