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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Antoniadis, I., Lacombe, O. & Leontaris, G.K. Hybrid inflation and waterfall field in string theory from D7-branes. J. High Energ. Phys. 2022, 11 (2022). https://doi.org/10.1007/JHEP01(2022)011
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DOI: https://doi.org/10.1007/JHEP01(2022)011