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

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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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-03354036
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Submitted on : Friday, September 24, 2021 - 3:33:17 PM
Last modification on : Sunday, September 26, 2021 - 3:26:54 AM

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Ignatios Antoniadis, Osmin Lacombe, George K. Leontaris. Hybrid inflation and waterfall field in string theory from D7-branes. 2021. ⟨hal-03354036⟩

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