Vacuum decay via Lorentzian wormholes

Details Vacuum decay via Lorentzian wormholes Vacuum decay via Lorentzian wormholes

1997-03-06

arxiv.org/abs/gr-qc/9703017v2

Int.J.Mod.Phys. A13 (1998) 1191-1200

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

10.1142/S0217751X98000548

We speculate about the spacetime description due to the presence of Lorentzian wormholes (handles in spacetime joining two distant regions or other universes) in quantum gravity. The semiclassical rate of production of these Lorentzian wormholes in Reissner-Nordstr\"om spacetimes is calculated as a result of the spontaneous decay of vacuum due to a real tunneling configuration. In the magnetic case it only depends on the field theoretical fine structure constant. We predict that the quantum probability corresponding to the nucleation of such geodesically complete spacetimes should be actually negligible in our physical Universe.

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