Article Dans Une Revue European Physical Journal C: Particles and Fields Année : 2024

A bimetric cosmological model based on Andreï Sakharov’s twin universe approach

Résumé

The standard cosmological model, based on Cold Dark Matter and Dark Energy (ΛCDM), faces several challenges. Among these is the need to adjust the scenario to account for the presence of vast voids in the large-scale structure of the universe, as well as the early formation of the first stars and galaxies. Additionally, the observed matter-antimatter asymmetry in the universe remains an unresolved issue. To address this latter question, Andrei Sakharov proposed a twin universe model in 1967. Building upon this idea and introducing interactions between these two universe sheets through a bimetric model, we propose an alternative interpretation of the large-scale structure of the universe, including its voids and the acceleration of cosmic expansion.

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hal-04979325 , version 1 (06-03-2025)

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Jean-Pierre Petit, Florent Margnat, Hicham Zejli. A bimetric cosmological model based on Andreï Sakharov’s twin universe approach. European Physical Journal C: Particles and Fields, 2024, 84, pp.1226. ⟨10.1140/epjc/s10052-024-13569-w⟩. ⟨hal-04979325⟩
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