6533b7d5fe1ef96bd1264893

RESEARCH PRODUCT

Creatable universes

Joan Josep FerrandoRamon LapiedraJuan Antonio Morales

subject

PhysicsNuclear and High Energy PhysicsAngular momentumCosmologiaGeneral relativitymedia_common.quotation_subjectCoordinate systemAstrophysics (astro-ph)FOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Type (model theory)AstrophysicsUniverseGeneral Relativity and Quantum CosmologyTheoretical physicsRelativitat general (Física)Quantum fluctuationmedia_common

description

We consider the question of properly defining energy and momenta for non asymptotic Minkowskian spaces in general relativity. Only spaces of this type, whose energy, linear 3-momentum, and intrinsic angular momentum vanish, would be candidates for creatable universes, that is, for universes which could have arisen from a vacuum quantum fluctuation. Given a universe, we completely characterize the family of coordinate systems for which one could sensibly say that this universe is a creatable universe.

yearjournalcountryeditionlanguage
2007-01-01
10.1103/physrevd.75.124003http://hdl.handle.net/10550/68481