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arXiv · 2109.03243

Hybrid inflation and waterfall field in string theory from D7-branes

Ignatios Antoniadis·Osmin Lacombe·George K. Leontaris
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Abstract

We present an explicit string realisation of a cosmological inflationary scenario we proposed recently within the framework of type IIB flux compactifications in the presence of three magnetised D7-brane stacks. Inflation takes place around a metastable de Sitter vacuum. The inflaton is identified with the volume modulus and has a potential with a very shallow minimum near the maximum. Inflation ends due to the presence of "waterfall" fields that drive the evolution of the Universe from a nearby saddle point towards a global minimum with tuneable vacuum energy describing the present state of our Universe.

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Ignatios Antoniadis, Osmin Lacombe, George K. Leontaris. 2021-09-07. Hybrid inflation and waterfall field in string theory from D7-branes. https://doi.org/10.1007/jhep01(2022)011

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