https://doi.org/10.1140/epjc/s10052-025-14461-x
Regular Article - Theoretical Physics
Reconstructing f(T) gravity and exploring the torsion driven warm inflationary cosmology
1
Department of Mathematics, Amity University, Major Arterial Road, Action Area II, Rajarhat, New Town, 700135, Kolkata, India
2
Department of Mathematics, Mrinalini Datta Mahavidyapith, 700051, Kolkata, India
3
Department of Mathematics, Arts and Sciences Faculty, Çanakkale Onsekiz Mart University, Terzioglu Campus, 17100, Çanakkale, Turkey
a schattopadhyay1@kol.amity.edu, surajitchatto@outlook.com
Received:
16
May
2025
Accepted:
22
June
2025
Published online:
2
July
2025
The current paper reports an investigation of a warm inflationary scenario in the context of f(T) gravity for a spatially flat FLRW universe. In our model, inflation is driven purely by the torsional sector of f(T) gravity, without introducing any additional scalar fields. We focus on the high dissipative regime (
), reconstruct the Hubble parameter as a function of the e-folding number N, and derive the slow-roll parameters 
and 
. The study has encapsulated the dynamics of inflation and its duration under strong dissipation. The dissipative coefficient 
is modeled with a temperature-dependent power-law form, linking the inflationary dynamics to thermal corrections and the particle content of the early universe. The analysis has affirmed that the torsion-induced energy density 
successfully transitions to radiation energy density 
, facilitating a graceful exit from inflation. Finally, we have validated our model by comparing the scalar spectral index and tensor-to-scalar ratio with Planck 2018 results, demonstrating consistency within observational bounds. Additionally, it is verified that the thermal domination condition 
and the torsion dominance condition 
are satisfied.
© The Author(s) 2025
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