Year: 2016
Type: article
Abstract: We describe how monomial chaotic inflation becomes compatible with the latest CMB data thanks to radiative corrections producing a plateau. The interactions of the inflaton with other fields, required for reheating, can flatten the potential and moderate the production of primordial gravitational waves, keeping these below the current upper bound. We show that the appearance of a plateau requires that the inflaton couples to fermions and to another scalar or a gauge group. We give concrete examples of minimal particle physics models leading to plateaus for quadratic and quartic chaotic inflation. We also provide a three-parameter model-independent description of radiatively corrected inflation that is amenable to CMB analyses.
Source: Journal of High Energy Physics
Authors: Guillermo Ballesteros, Carlos Tamarit
Institutions: Centre National de la Recherche Scientifique, Consejo Superior de Investigaciones Científicas, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Instituto de Física Teórica, Institut de Physique Théorique, Universidad Autónoma de Madrid, European Organization for Nuclear Research, Durham University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2950321340