Chern-Simons Gravity in Four Dimensions
arXiv:1701.03642 · doi:10.1140/epjc/s10052-017-4653-8
Abstract
Five dimensional Chern-Simons theory with (anti-)de Sitter SO(1,5) or SO(2,4) gauge invariance presents an alternative to General Relativity with cosmological constant. We consider the zero-modes of its Kaluza-Klein compactification to four dimensions. Solutions with vanishing torsion are obtained in the cases of a spherically symmetric 3-space and of a homogeneous and isotropic 3-space, which reproduce the Schwarzshild-de Sitter and CDM cosmological solutions of General Relativity. We also check that vanishing torsion is a stable feature of the solutions.
25 pages, Latex