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High Energy Physics - Phenomenology

arXiv:2111.00825 (hep-ph)
[Submitted on 1 Nov 2021 (v1), last revised 8 Nov 2021 (this version, v2)]

Title:Reheating in Models with Non-minimal Coupling in metric and Palatini formalisms

Authors:Dhong Yeon Cheong, Sung Mook Lee, Seong Chan Park
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Abstract:We study reheating of inflationary models with general non-minimal coupling $K(\phi)R$ with $K(\phi)\sim \sqrt{V(\phi)}$ where $R$ is the Ricci scalar and $V$ is the inflaton potential. In particular, when we take the monomial potential $K(\phi) \propto \phi^m$ with $m \in \mathbb{Z}_+$, we provide general analytic expressions for cosmological observables. We consider a wide range of non-minimal coupling $ \xi \in [0, \infty) $ in metric and Palatini formalisms and derive the predictions for cosmological observables and the reheating temperature taking a general equation of state parameter $ w_\text{reh} $.
Comments: 20 pages, 6 figures, v2: references added
Subjects: High Energy Physics - Phenomenology (hep-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)
Cite as: arXiv:2111.00825 [hep-ph]
  (or arXiv:2111.00825v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.2111.00825
Related DOI: https://doi.org/10.1088/1475-7516/2022/02/029

Submission history

From: Sung Mook Lee [view email]
[v1] Mon, 1 Nov 2021 10:56:55 UTC (5,935 KB)
[v2] Mon, 8 Nov 2021 08:06:03 UTC (5,939 KB)
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