Noncommutative Corrections to the Robertson-Walker Metric

dc.contributor.authorFabi, S.
dc.contributor.authorHarms, B.
dc.contributor.authorStern, Allen
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2019-05-02T16:54:08Z
dc.date.available2019-05-02T16:54:08Z
dc.date.issued2008-09-23
dc.description.abstractUpon 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 timelike geodesics and the result resembles a bouncing cosmology.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://ir.ua.edu/handle/123456789/5496
dc.subject.lcshCosmology
dc.subject.lcshPhysics
dc.titleNoncommutative Corrections to the Robertson-Walker Metricen_US
dc.typetext
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