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(Multi-field) Natural Inflation and Gravitational Waves
Alberto Salvio, Simone Sciusco
We provide a detailed study of natural inflation with a periodic non-minimal coupling, which is a well-motivated inflationary model that admits an explicit UV completion. We demons…
BICEP/Keck data and Quadratic Gravity
Alberto Salvio
The recent results of the BICEP and Keck collaborations have put stringent bounds on many inflationary models, including some well-motivated ones. This is certainly the case when g…
Inflationary Perturbations in No-Scale Theories
Alberto Salvio
We study the inflationary perturbations in general (classically) scale-invariant theories. Such scenario is motivated by the hierarchy problem and provides natural inflationary pot…
Dynamically Induced Planck Scale and Inflation
Kristjan Kannike, Gert Hütsi, Liberato Pizza +4
Theories where the Planck scale is dynamically generated from dimensionless interactions provide predictive inflationary potentials and super-Planckian field variations. We first s…