English

Swampland dS conjecture in Mimetic $f(R, T)$ gravity

General Relativity and Quantum Cosmology 2022-08-26 v1 High Energy Physics - Theory

Abstract

In this paper, we study a theory of gravity called mimetic f(R,T)f(R, T) in the presence of swampland dS conjecture. For this purpose, we introduce several inflation solutions of the Hubble parameter H(N) from f(R,T)=R+δTf(R, T)= R+\delta T gravity model, in which R is Ricci scalar, and T denotes the trace of the energy-momentum tensor. Also, δ\delta and NN are the free parameter and a number of e-fold, respectively. Then we calculate quantities such as potential, Lagrange multiplier, slow-roll, and some cosmological parameters such as nsn_{s} and rr. Then we challenge the mentioned inflationary model from the swampland dS conjecture. We discuss the stability of the model and investigate the compatibility or incompatibility of this inflationary scenario with the latest Planck observable data.

Keywords

Cite

@article{arxiv.2208.12229,
  title  = {Swampland dS conjecture in Mimetic $f(R, T)$ gravity},
  author = {S. Noori Gashti and J. Sadeghi and S. Upadhyay and M. R. Alipour},
  journal= {arXiv preprint arXiv:2208.12229},
  year   = {2022}
}

Comments

34 pages, 7 figures, accepted in Communications in Theoretical Physics