English

Energy condition bounds on $f(Q)$ model parameters in a curved FLRW universe

General Relativity and Quantum Cosmology 2023-06-07 v2

Abstract

In this exclusive study of the modified f(Q)f(Q) theory of gravity in the open and closed type Friedmann-Lema\^itre-Robertson-Walker (FLRW) universe model, we impose some constraints from the classical energy conditions. The viable range of parameter β\beta for two different f(Q)f(Q) models, f(Q)=Q+βQ2f(Q)=Q+\beta Q^2 and f(Q)=Q+βQf(Q)=Q+\beta\sqrt{-Q}, are analyzed in details and the related cosmological implications are discussed. Violation of effective strong energy condition is resulting into late-time acceleration of the Universe. Present observational values of Hubble parameter and deceleration parameter are used to constrain the parameters.

Keywords

Cite

@article{arxiv.2304.05031,
  title  = {Energy condition bounds on $f(Q)$ model parameters in a curved FLRW universe},
  author = {Ganesh Subramaniam and Avik De and Tee-How Loo and Yong Kheng Goh},
  journal= {arXiv preprint arXiv:2304.05031},
  year   = {2023}
}

Comments

Accepted for publication in Physics of the Dark Universe