English

Reconstructing inflation and reheating in $f(\phi)T$ gravity

General Relativity and Quantum Cosmology 2023-10-12 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

The reconstruction of an inflationary universe in the context of one f(ϕ)Tf(\phi)T gravity, in which TT corresponds to the trace of energy momentum tensor is studied. To realize this reconstruction during the inflationary epoch, we consider as attractor the scalar spectral index nsn_s in terms of of the number of ee-folds NN, in the framework of the slow-roll approximation. By assuming a specific function f(ϕ)f(\phi) together with the simplest attractor ns(N)n_s(N), we find different expressions for the reconstructed effective potential V(ϕ)V(\phi). Additionally, we analyze the era of reheating occurs after of the reconstruction obtained during the inflationary epoch. In this scenario we determine the duration and temperature during the reheating epoch, in terms of the equation of state parameter and the observational parameters. In this context, the different parameters associated to the reconstructed model are restricted during the scenarios of inflation and reheating by considering the recent astronomical observations.

Keywords

Cite

@article{arxiv.2210.10080,
  title  = {Reconstructing inflation and reheating in $f(\phi)T$ gravity},
  author = {Ramon Herrera and Carlos Rios},
  journal= {arXiv preprint arXiv:2210.10080},
  year   = {2023}
}

Comments

18 pages and 6 figures. Accepted to publication in Annals of Physics

R2 v1 2026-06-28T03:56:33.306Z