Noncommutative Corrections to the Robertson-Walker metric

Simple item page
dc.creatorFabi, S.
dc.creatorHarms, B.
dc.creatorStern, A.
dc.date2008-08-07
dc.date.accessioned2026-07-07T11:45:23Z
dc.date.available2026-07-07T11:45:23Z
dc.descriptionUpon applying Chamseddine's noncommutative deformation of gravity we obtain the leading order noncommutative corrections to the Robertson-Walker metric tensor. We get an isotropic inhomogeneous metric tensor for a certain choice of the noncommutativity parameters. Moreover, the singularity of the commutative metric at $t=0$ is replaced by a more involved space-time structure in the noncommutative theory. In a toy model we construct a scenario where there is no singularity at $t=0$ at leading order in the noncommutativity parameter. Although singularities may still be present for nonzero $t$, they need not be the source of all time-like geodesics and the result resembles a bouncing cosmology.
dc.description13 pages
dc.identifierhttps://arxiv.org/abs/0808.0943
dc.identifierhttp://arxiv.org/abs/0808.0943
dc.identifierPhys.Rev.D78:065037,2008
dc.identifierdoi:10.1103/PhysRevD.78.065037
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201859
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleNoncommutative Corrections to the Robertson-Walker metric
dc.typetext

Files

Collections

arXiv