English

Isotropic cosmologies in Weyl geometry

General Relativity and Quantum Cosmology 2009-11-10 v1

Abstract

We study homogeneous and isotropic cosmologies in a Weyl spacetime. We show that for homogeneous and isotropic spacetimes, the field equations can be reduced to the Einstein equations with a two-fluid source. We write the equations as a two-dimensional dynamical system and analyze the qualitative, asymptotic behavior of the models. We examine the possibility that in certain theories the Weyl 1-form may give rise to a late accelerated expansion of the Universe and conclude that such behaviour is not met as a generic feature of the simplest cosmologies.

Keywords

Cite

@article{arxiv.gr-qc/0402039,
  title  = {Isotropic cosmologies in Weyl geometry},
  author = {John Miritzis},
  journal= {arXiv preprint arXiv:gr-qc/0402039},
  year   = {2009}
}

Comments

18 pages, 4 figures

R2 v1 2026-07-22T12:39:36.930Z