Loop Blow-up Inflation

2024/03/07 by Sukŗti Bansal, Luca Brunelli, Bansal, Sukŗti +7 · 4 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Black Holes and Theoretical Physics #Galaxies: Formation, Evolution, Phenomena

paper · pdf · doi:10.48550/arxiv.2403.04831

Abstract

We present a new model of string inflation driven by a blow-up Kähler 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∼ 10^-5.

Cited by

• Inflationary Particle Production and the Swampland
• Coexisting Flux String Vacua from Numerical Kähler Moduli Stabilisation
• Assisted Fibre Inflation in Perturbative LVS
• Vacuum Tunneling from Conifold Transitions in IIB

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