Growth factor in $f(T,\mathcal{T})$ gravity

Gabriel Farrugia; Jackson Levi Said

Growth factor in $f(T,\mathcal{T})$ gravity

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arxiv 1612.00974 v1 pith:3CPN2C4V submitted 2016-12-03 gr-qc

Gabriel Farrugia , Jackson Levi Said This is my paper · ORCID

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abstract

We investigate the growth factor for sub-horizon modes during late times in $f(T,\mathcal{T})$ gravity, where $T$ is the torsion scalar and $\mathcal{T}$ is the trace of the stress-energy tensor. This is achieved by obtaining the modified M\'{e}sz\'{a}ros equation, which describes the evolution of the perturbations of the matter energy density, and obtaining numerical results. Such results are obtained by solving the modified continuity equation and analysing the behaviour of the solutions of the latter using various constraints on the integration constants. Furthermore, the role of the anisotropic term $\pi^{S}$ is investigated.

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Late Time Phenomena in $f(T,\mathcal{T})$ Gravity Framework: Role of $H_0$ Priors
gr-qc 2024-11 conditional novelty 4.0 of 10

An f(T,T) gravity model fitted to Pantheon+, BAO, and cosmic chronometer data yields a range of H0 posteriors that track the input priors, and predicts a growth rate about 9-11% below ΛCDM for two data combinations.

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