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arXiv · 2101.05918

Cosmology from non-minimal geometry-matter coupling

B. S. Gonçalves·P. H. R. S. Moraes·B. Mishra
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Abstract

We construct a cosmological model from the inception of the Friedmann-Lemâitre-Robertson-Walker metric into the field equations of the f(R,L_m) gravity theory, with R being the Ricci scalar and L_m being the matter lagrangian density. The formalism is developed for a particular f(R,L_m) function, namely R/16π+(1+σR)L_{m}, with σbeing a constant that carries the geometry-matter coupling. Our solutions are remarkably capable of evading the Big-Bang singularity as well as predict the cosmic acceleration with no need for the cosmological constant, but simply as a consequence of the geometry-matter coupling terms in the Friedmann-like equations

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B. S. Gonçalves, P. H. R. S. Moraes, B. Mishra. 2023-04-10. Cosmology from non-minimal geometry-matter coupling. https://doi.org/10.1002/prop.202200153

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