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 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.& COPY; 2023 Elsevier Inc. All rights reserved.

Automated summary

Kasner cosmology is a vacuum and anisotropically expanding spacetime studied in the bumblebee model, where Lorentz symmetry is broken. The anisotropic nature of Kasner cosmology can be explained by the bumblebee context, suggesting that the anisotropy in this model could stem from the breaking of Lorentz symmetry. An application in pre-inflationary cosmology is proposed.