Kasner cosmology in bumblebee gravity

Kasner cosmology is a vacuum and anisotropically expanding spacetime in the general relativity context. In this work, such a cosmological model is studied in another context, the bumblebee model, where the Lorentz symmetry is spontaneously broken. By using the bumblebee context it is possible to jus...

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Bibliographic Details
Published in:Annals of physics 2023-07, Vol.454, p.169338, Article 169338
Main Author: Neves, Juliano C.S.
Format: Article
Language:English
Subjects:
Anisotropic spacetime
Cosmology
Kasner geometry
Lorentz symmetry breaking
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Summary:Kasner cosmology is a vacuum and anisotropically expanding spacetime in the general relativity context. In this work, such a cosmological model is studied in another context, the bumblebee model, where the Lorentz symmetry is spontaneously broken. By using the bumblebee context it is possible to justify the anisotropic feature of the Kasner cosmology. Thus, the origin of the anisotropy in this cosmological model could be in the Lorentz symmetry breaking. Lastly, an application in the pre-inflationary cosmology is suggested. •Lorentz violation in a cosmological model.•Kasner cosmology is an anisotropic and vacuum model.•The anisotropies in the Kasner model could have an origin in the Lorenz violation.
ISSN:0003-4916
1096-035X
DOI:10.1016/j.aop.2023.169338