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arXiv · 2304.05031

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

Ganesh Subramaniam·Avik De·Tee-How Loo·Yong Kheng Goh
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Abstract

In this exclusive study of the modified $f(Q)$ 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 $\beta$ for two different $f(Q)$ models, $f(Q)=Q+\beta Q^2$ and $f(Q)=Q+\beta\sqrt{-Q}$, 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.

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Ganesh Subramaniam, Avik De, Tee-How Loo, Yong Kheng Goh. 2023-04-11. Energy condition bounds on $f(Q)$ model parameters in a curved FLRW universe. https://doi.org/10.1016/j.dark.2023.101243

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