https://doi.org/10.1140/epjp/s13360-022-02494-0
Regular Article
An exact solution approach to warm inflation using Tsallis and Barrow holographic dark energy entropy within Rastall gravity
1
Department of Mathematics, COMSATS University Islamabad, 54590, Lahore Campus, Lahore, Pakistan
2
Institute of Geophysics and Geomatics, China University of Geosciences, 430074, Wuhan, Hubei, China
a
rabiasaleem@cuilahore.edu.pk
Received:
6
October
2021
Accepted:
15
February
2022
Published online:
26
February
2022
This paper studies the phenomena of warm inflation in a modified cosmological scenario within Rastall gravity. In this context, we modify the standard Friedmann equations using recently proposed Tsallis and Barrow holographic dark energy entropies, alternatively. For both entropies, the exact solutions including the inflaton field, potential required to produce inflation and the scale factor are obtained under slow-roll approximation for low- and high-dissipative regimes. We obtain exponentially growing scale factors for both dark energy models. To confront the theoretical predictions of these models with recent observational data, we calculate the slow-roll parameters, number of e-folds, scalar spectral index, running of scalar spectral index and the tensor-to-scalar ratio for both extremes of dissipation. The Planck bounds on inflationary trajectories are being used to constraint the free parameters. The results are interesting and physically viable up to 2
level.
The original online version of this article was revised to change author name Muddasar Sabir to Mudassar Sabir.
A correction to this article is available online at https://doi.org/10.1140/epjp/s13360-022-02534-9.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
