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Quantum CTC's in General Relativity
General Relativity and Gravitation, 2001Closed timelike curves and their importance in theories of quantum gravity are discussed at the example of tunneling spacetimes constructed from generalized Misner spacetimes. These models are quantum mechanically stable and show negative energy densities and closed timelike curves at the Planck scale.
Garay, Luis J. +1 more
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GENERAL RELATIVITY AND QUANTUM MECHANICS
International Journal of Modern Physics A, 2001Usual quantum mechanics requires a fixed background spacetime geometry and its associated causal structure. A generalization of the usual theory may therefore be needed at the Planck scale for quantum theories of gravity in which spacetime geometry is a quantum variable.
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Quantum and non-quantum anomalies in general relativity
Nuclear Physics B - Proceedings Supplements, 1991zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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