https://doi.org/10.1140/epjp/s13360-024-04979-6
Regular Article
Reheating constraints on modified quadratic chaotic inflation
1
Department of Physics, Malaviya National Institute of Technology Jaipur, 302017, Jaipur, India
2
Department of Physics, National Institute of Technology Puducherry, 609609, Karaikal, India
3
Department of Physics, Indian Institute of Technology Bombay, 400076, Mumbai, India
4
Department of Physics, Indian Institute of Technology Gandhinagar, 382055, Gandhinagar, India
Received:
15
September
2023
Accepted:
6
February
2024
Published online:
24
February
2024
The reheating era of inflationary universe can be parameterized by various parameters like reheating temperature 
, reheating duration 
and average equation of state parameter 
, which can be constrained by observationally feasible values of scalar power spectral amplitude 
and spectral index 
. In this work, by considering the quadratic chaotic inflationary potential with logarithmic correction in mass, we examine the reheating era in order to place some limits on model’s parameter space. By investigating the reheating epoch using Planck 2018+BK18+BAO data, we show that even a small correction can make the quadratic chaotic model consistent with latest cosmological observations. We also find that the study of reheating era helps to put much tighter constraints on model and effectively improves accuracy of model.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
