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arXiv · 2203.11689

Interpretation of galaxy rotation curves from primordial black holes in 4D Einstein-Gauss-Bonnet gravity

M. Bousder
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Abstract

We develop a novel approach to the dark matter halos in the context of 4 dimensional Einstein--scalar-Gauss-Bonnet gravity to reproduce the flat rotation curves of galaxies. Moreover, the Gauss-Bonnet coupling describes the interior structure of the galaxies, while there is a presence of a scalar field $\phi $ in the galaxy edges. This can provide an interesting interpretation for the functional coupling $f(\phi )$. We discuss how this comparison can naturally drive the observed percentages of matter and dark matter in the Universe. The effective mass range\ in our model is $% 10^{-2}kg-10^{3}kg$, which is in good agreement with the constraints on primordial black holes.

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M. Bousder. 2022-03-17. Interpretation of galaxy rotation curves from primordial black holes in 4D Einstein-Gauss-Bonnet gravity. https://arxiv.org/abs/2203.11689

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