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RESEARCH PRODUCT
Intrinsic energy of Lema\^itre-Tolman-Bondi models and cosmological implications
Juan Antonio Morales-lladosaRamon Lapiedrasubject
PhysicsNuclear and High Energy PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)Cosmologiamedia_common.quotation_subjectFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsUniversePhysics::History of PhysicsGeneral Relativity and Quantum CosmologyTheoretical physicsGeneral Relativity and Quantum CosmologyRelativitat general (Física)Metric (mathematics)Dark energyValue (mathematics)QuantumEnergy (signal processing)media_commonAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
Recently, some Lema{\^{\i}}tre-Tolman-Bondi metrics have been considered as models alternative to the dark energy within the Friedmann-Lema{\^{\i}}tre-Robertson-Walker universes. The vanishing of the intrinsic energy of these metrics is examined since such a vanishing, in the present case and in general, could be interpreted as a necessary condition to consider the possibility of the quantum creation of a metric. More specifically, this vanishing is examined in the particular case where the Lema{\^{\i}}tre-Tolman-Bondi metrics behave asymptotically like a Friedmann-Lema{\^{\i}}tre-Robertson-Walker universe. Finally, we deal with a particular model ruled out after being confronted with cosmic observations. In a minimal agreement with this negative result, leaving aside an unstable case, the value of the intrinsic energy of this particular model does not vanish and becomes in fact minus infinite.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-03-05 |