Warm deformed \(R^{2}\) inflation
In this work, we study warm inflationary scenario based on a deformation of \(R^{2}\) gravity. We start considering \(R^{p}\) and assume \(p=2(1+\delta)\) with \(\delta\ll 1\) so that we simply obtain warm \(R^{2}\) inflation when setting \(\delta=0\). We then derive the potential in the Einstein fr...
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Published in | arXiv.org |
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Main Authors | , , |
Format | Paper |
Language | English |
Published |
Ithaca
Cornell University Library, arXiv.org
19.12.2022
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Subjects | |
Online Access | Get full text |
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Summary: | In this work, we study warm inflationary scenario based on a deformation of \(R^{2}\) gravity. We start considering \(R^{p}\) and assume \(p=2(1+\delta)\) with \(\delta\ll 1\) so that we simply obtain warm \(R^{2}\) inflation when setting \(\delta=0\). We then derive the potential in the Einstein frame and consider a dissipation parameter of the form \(\Gamma = C_{1}T\) with \(C_1\) being a coupling parameter. We focus only on the strong regime of which the interaction between inflaton and radiation fluid has been taken into account. We compute inflationary observables and constrain the parameters of our model using latest observational data reported by Planck. From our analysis, we discover that with proper choices of parameters the derived \(n_s\) and \(r\) are in good agreement with the Planck 2018 observational constraints. Particularly, we constrain the potential scale \(U_{0}\) of the models. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.2203.11041 |