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- W4309693313 abstract "Recently, Amendola et al. proposed a geometrical theory of gravity containing higher-order derivative terms. The authors introduced anticurvature scalar $(A)$, which is the trace of the inverse of the Ricci tensor ($A^{munu} = R_{munu}^{-1}$). In this work, we consider two classes of Ricci-inverse -- Class I and Class II -- models. Class I models are of the form $f(R, A)$ where $f$ is a function of Ricci and anticurvature scalars. Class II models are of the form ${cal F}(R, A^{munu}A_{munu})$ where ${cal F}$ is a function of Ricci scalar and square of anticurvature tensor. For both these classes of models, we numerically solve the modified Friedmann equations in the redshift range $1500 < z < 0$. We show that the late-time evolution of the Universe, i.e., evolution from matter-dominated epoch to accelerated expansion epoch, emph{can not} be explained by these two classes of models. Using the reduced action approach, we show that we emph{can not bypass} the no-go theorem for Ricci-inverse gravity models. Finally, we discuss the implications of our analysis for the early-Universe cosmology." @default.
- W4309693313 created "2022-11-29" @default.
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- W4309693313 date "2022-11-21" @default.
- W4309693313 modified "2023-09-29" @default.
- W4309693313 title "Can we bypass no-go theorem for Ricci-inverse gravity?" @default.
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- W4309693313 doi "https://doi.org/10.1140/epjp/s13360-022-03472-2" @default.
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