Four-dimensional Brane–Chern–Simons Gravity and Cosmology

F. Gómez, S. Lepe, P. Salgado

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

From the field equations corresponding to a four-dimensional brane embedded in the five-dimensional spacetime of the Einstein–Chern–Simons theory for gravity, we find cosmological solutions that describe an accelerated expansion for a flat universe. Apart from a quintessence-type evolution scheme, we obtain a transient phantom evolution, which is not ruled out by the current observational data. Additionally, a bouncing solution is shown. The introduction of a kinetic term in the action shows a de Sitter behavior although the energy density is not constant. A quintessence behavior is also found. We conjecture on a possible geometric origin of dark energy coming from this action.

Original languageEnglish
Article number9
JournalEuropean Physical Journal C
Volume81
Issue number1
DOIs
StatePublished - Jan 2021
Externally publishedYes

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