DESI and fast radio burst used to constrain modified theories of gravity

TL;DR

This study evaluates the potential of DESI and fast radio bursts to constrain parameters in a modified $f(R)$ gravity model, using observational data and statistical analysis to compare with the standard $ ext{Lambda}$CDM model.

Contribution

It introduces a Starobinsky-type $f(R)$ gravity model with intrinsic non-commutative coefficients and assesses its viability using multiple cosmological data sets.

Findings

Constraints on free parameters of the $f(R)$ model from observational data.

Comparison showing how DESI and FRBs can effectively limit modified gravity theories.

Discussion on the model's compatibility with standard cosmological observations.

Abstract

This paper is devoted to the study of the viability of DESI and the fast radio burst to constrain the free parameters of modified theories of gravity. Thus, we present a model supported in $f(R)$ gravity involving a function of the Ricci scalar named Starobinsky-type with the peculiarity that the non-commutative essence is intrinsic to the coefficients. Additionally, to understand the dynamics within a flat Friedmann-Lemaitre-Robertson-Walker universe, we explore the possibility of deriving a Friedman equation (in measure) that results from an adequate mathematical treatment. As we mentioned previously, to test the outlined model, a Monte Carlo Markov chain analysis is implemented, using cosmic chronometers, type Ia supernovae, Hydrogen II galaxies, Intermediate-luminosity quasars, Baryon Acoustic oscillations and Fast Radio Bursts data, to constraint the free parameters of the model and presenting $H(z)$, $q(z)$ and $\omega_{eff}(z)$. The final results are compared with the $\Lambda$CDM model and a robust discussion is presented about the viability of DESI and fast radio burst to constraint free parameters in specific to a modified theory of gravity.