Chaotic Inflation RIDES Again
Venus Keus, Stephen F. King

TL;DR
This paper revisits chaotic inflation models incorporating radiative corrections and non-minimal gravity coupling, proposing a unified framework (RIDE) that fits recent Planck and ACT data by adjusting key parameters.
Contribution
It introduces a radiative inflation and dark energy (RIDE) model with a complex scalar field, incorporating quantum corrections and gravity coupling to better match observational data.
Findings
Radiative corrections induce spontaneous symmetry breaking near scale Λ.
Non-minimal coupling reduces tensor-to-scalar ratio r.
Model fits Planck and ACT data with specific parameter choices.
Abstract
Following the recent Atacama Cosmology Telescope (ACT) results, we revisit chaotic inflation based on a single complex scalar field with mass term , which usually predicts a spectra index but a too-large tensor to scalar ratio . With radiative corrections, the potential induces spontaneous symmetry breaking near the scale , yielding a Pseudo Nambu-Goldstone boson which can play the role of a quintessence field, hence radiative inflation and dark energy (RIDE). Including a non-minimal coupling to gravity reduces , allowing a good fit of the RIDE model to Planck data. Allowing a small additional quartic coupling correction increases both and , with a good fit to ACT data sets achieved for .
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Taxonomy
TopicsCosmology and Gravitation Theories · Particle physics theoretical and experimental studies · Galaxies: Formation, Evolution, Phenomena
