6533b839fe1ef96bd12a5b6b
RESEARCH PRODUCT
Intrinsic vanishing of energy and momenta in a universe
Juan Antonio Morales-lladosaRamon Lapiedrasubject
PhysicsGeneral Relativity and Quantum CosmologyFormalism (philosophy of mathematics)Theoretical physicsPhysics and Astronomy (miscellaneous)General relativitymedia_common.quotation_subjectGaussFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum CosmologyUniversemedia_commondescription
We present a new approach to the question of properly defining energy and momenta for non asymptotically Minkowskian spaces in general relativity, in the case where these energy and momenta are conserved. In order to do this, we first prove that there always exist some special Gauss coordinates for which the conserved linear and angular three-momenta vanish. This allows us to consider the case of creatable universes (the universes whose proper 4-momenta vanish) in a consistent way, which is the main interest of the paper. When applied to the Friedmann-Lema{\^{\i}}tre-Robertson-Walker case, perturbed or not, our formalism leads to previous results, according to most literature on the subject. Some future work that should be done is mentioned.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-04-16 | General Relativity and Gravitation |