Logarithmic corrected $f(R)$ gravitational model and swampland conjectures

TL;DR

This paper investigates a logarithmically corrected $f(R)$ gravity model, verifying its consistency with swampland conjectures and observational data, and constrains model parameters using Planck 2018 results.

Contribution

It introduces a polynomial $f(R)$ model with a logarithmic correction and tests its compatibility with swampland conjectures and cosmological observations.

Findings

Model is consistent with swampland conjectures.

Parameter $n$ is constrained between 0.0033 and 0.15.

Derived coefficients $eta$, $eta$, $eta$ match Planck 2018 data.

Abstract

In this paper, we use corrected $f(R)$ gravitational model which is polynomial function with a logarithmic term. In that case, we employ the slow-roll condition and obtain the number of cosmological parameter. This help us to verify the swampland conjectures which is guarantee the validation of low - energy quantum field theory. The obtained results shown that the corresponding model is consistent with the swampland conjectures. Also the upper and lower limit of the parameter \textcolor{red}{$n$} are \textcolor{blue}{0.15} and \textcolor{blue}{0.0033}. Finally, by using scalar spectrum index $ n_{s} $ and tensor to scalar ratio $ r $ relations and compared with Planck 2018 empirical data, we obtain the coefficients $\alpha$,$\beta$ and $\gamma$. Also, the corresponding results are creaked by several figures, literature and also plank 2018 data.