Creatable universes: A new approach

Details Creatable universes: A new approach Creatable universes: A new approach

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jphcs.229a2053l&link_type=abstract

Journal of Physics: Conference Series, Volume 229, Issue 1, pp. 012053 (2010).

Physics

1

Scientific paper

We are interested in the non asymptotically flat space-times for which all the momenta (energy, 3-momentum and angular 4-momenta) are conserved in time. We call universes such space-times. Starting from the Weinberg definition of the momenta associated to a spacelike 3-surface, we give a coordinate prescription to properly define the energy of a universe. The prescription includes the vanishing of linear and angular 3-momenta. This result allows us to consider the case of universes with vanishing 4-momenta (creatable universes) in a consistent way.

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