Conference Paper
Nariai-bertotti-robinson spacetimes as a building material for one-way wormholes with horizons, but without singularity
Fecha
2008Autor
Mitskievich, N.V.
Guevara, M.G.M.
Rodriguez, H.V.
Institución
Resumen
We discuss the problem of wormholes from the viewpoint of gluing together two Reissner - Nordström-type universes while putting between them a segment of the Nariai-type world (in both cases there are also present electromagnetic fields as well as the cosmological constant). Such a toy wormhole represents an example of one-way topological communication free from causal paradoxes, though involving a travel to next spacetime sheet since one has to cross at least a pair of horizons through which the spacetimes' junction occurs. We also consider the use of thin shells in these constructions. Such a "material" for wormholes we choose taking into account specific properties of the Nariai-Bertotti-Robinson spacetimes. © 2008 World Scientific Publishing Co. Pte. Ltd.