Vacuum decay via Lorentzian wormholes
General Relativity and Quantum Cosmology
2009-10-30 v2
Abstract
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.
Cite
@article{arxiv.gr-qc/9703017,
title = {Vacuum decay via Lorentzian wormholes},
author = {Jose-Luis Rosales},
journal= {arXiv preprint arXiv:gr-qc/9703017},
year = {2009}
}