6533b7d1fe1ef96bd125c156

RESEARCH PRODUCT

Cosmological solutions in theD=5 Einstein-Maxwell theory coupled to matter

J. C. FabrisR. Balbinot

subject

PhysicsGravitationsymbols.namesakeSingularityPhysics and Astronomy (miscellaneous)Initial singularitySingular solutionGeneral relativitySpace timesymbolsEinsteinCosmologyMathematical physics

description

We study the Einstein-Maxwell theory in five dimensions coupled to matter in two distinct ways. In the first we reduce the Lagrangian to an effective four-dimension one and then we couple it to matter; in the second, we introduce matter directly in the original five-dimensional theory. In both cases we use a non trivial configuration for the Maxwell potential. We find non singular solutions which present a repulsive gravitational phase. When this phase is absent, the initial singularity is unavoidable.

https://doi.org/10.1007/bf00756826