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Pré-Publication, Document De Travail Année : 2024

Matter-antimatter asymmetry?

Résumé

The widely held expectation of equal matter and antimatter production during the Big Bang sharply contrasts with the observable Universe's current predominant composition of matter. This persistent asymmetry poses an intriguing puzzle and remains a paramount challenge in modern physics. In this study, we delve into the enigma of antimatter, focusing on the matter-antimatter asymmetry within the context of de Sitter spacetime as the classical background. De Sitter spacetime, representing a scenario where the cosmological constant governs, leading to accelerated expansion, emerges as a pivotal model essential for comprehending the dynamics of the present Universe. Our analysis, rooted in a fundamental requirement of the quantum field theory description of de Sitterian elementary systems — specifically, the analyticity requirement in the complexified de Sitter manifold, offers a novel perspective. It suggests that the matter-antimatter asymmetry is an observational anomaly discernible exclusively by local observers with causal access to a specific segment of de Sitter spacetime. In contrast to local observations, the global structure of this spacetime maintains a perfect matter-antimatter symmetry. This unconventional insight challenges established perspectives, ushering in a paradigm shift in our understanding of the observed asymmetry in the distribution of matter and antimatter throughout the Universe.
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Dates et versions

hal-04445771 , version 1 (08-02-2024)

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  • HAL Id : hal-04445771 , version 1

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Jean-Pierre Gazeau, Hamed Pejhan. Matter-antimatter asymmetry?. 2024. ⟨hal-04445771⟩
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