Quantum time machine

Abstract

The continuation of Misner space into the Euclidean region is seen to imply the topological restriction that the period of the closed spatial direction becomes time-dependent. This restriction results in a modified Lorentzian Misner space in which the renormalized stress-energy tensor for quantized complex massless scalar fields becomes regular everywhere, even on the chronology horizon. A quantum-mechanically stable time machine with just the sub-microscopic size may then be constructed out of the modified Misner space, for which the semiclassical Hawking's chronology protection conjecture is no longer an obstruction.

6 pages, RevTex

References in corpus (5)

• Quantum Black Holes as Atoms
• A Self-Consistent Vacuum for Misner Space and the Chronology Protection Conjecture
• Ringholes and closed timelike curves
• Observable effects from spacetime tunneling
• Divergences in the Effective Action for Acausal Spacetimes

Cited by in corpus (12)

• The quantum mechanics of time travel through post-selected teleportation
• Achronal cosmic future
• Quantum evolution in spacetime foam
• Wormholes and Ringholes in a Dark-Energy Universe
• On the warp drive space-time
• Some notes on the Big Trip
• Observing other universe through ringholes and Klein-bottle holes
• Nonorientable spacetime tunneling
• Perdurance of multiply connected de Sitter space
• Misner-brane cosmology
• Spacetime Foam Effects on Charged AdS Black Hole Thermodynamics
• Cosmological predictions from the Misner brane