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arXiv · 2103.03627

Inhomogeneous Hubble diagram from vector K-mouflage

Jose Beltran Jimenez·Dario Bettoni·Philippe Brax
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Abstract

In this Letter we construct the Hubble diagram for a Universe where dark matter is universally charged under a dark non-linear electromagnetic force which features a screening mechanism of the K-mouflage type for repulsive forces. By resorting to the Newtonian approximation, we explicitly show that the cosmological evolution generates an inhomogeneous Hubble diagram that corresponds to a curvature dominated expansion at short distances and converges to the cosmological one of $\Lambda$CDM. We discuss the potential impact of this inhomogeneous profile on the Hubble tension. For completeness, we explicitly show how the Newtonian approximation can be derived from an inhomogeneous relativistic Lema\^itre model.

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Jose Beltran Jimenez, Dario Bettoni, Philippe Brax. 2021-03-05. Inhomogeneous Hubble diagram from vector K-mouflage. https://doi.org/10.1088/1361-6382%2Fabfd87

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