Loop blow-up inflation

doi:10.1007/JHEP07(2024)289

Loop blow-up inflation

2024-07-31

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DOI：10.1007/JHEP07(2024)289

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Abstract

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We present a new model of string inflation driven by a blow-up K & auml;hler modulus of type IIb compactifications with a potential generated by string loops. Slow-roll is naturally realized thanks to the fact that the blow-up mode is a leading-order flat direction lifted by string loops which are unavoidable and generate a plateau at large field values. We check that throughout the whole inflationary dynamics the effective field theory is under control. We perform a phenomenological analysis determining the exact number of efoldings by studying the post-inflationary evolution. We determine the values of the microscopic parameters which lead to agreement with CMB data, together with the prediction of a tensor-to-scalar ratio of order r similar to 10-5.

Keywords:

Cosmological models

Cosmology of Theories BSM

String and Brane Phenomenology

Superstring Vacua

Loop blow-up inflation

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