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PIRSA:10120068

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https://pirsa.org/10120068

Quantum Mechanics in the Presence of Time Machines

Ralph, T. (2010). Quantum Mechanics in the Presence of Time Machines. Perimeter Institute for Theoretical Physics. https://pirsa.org/10120068

Tim Ralph University of Queensland

Talk numberPIRSA:10120068
DOI10.48660/10120068
Source RepositoryPIRSA
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Talk Type Conference
Subject

Abstract

Tim Ralph We consider quantum mechanical particles that traverse general relativistic wormholes in such a way that they can interact with their own past, thus forming closed timelike curves. Using a simple geometric argument we reproduce the solutions proposed by Deutsch for such systems. Deutsch's solutions have attracted considerable interest because they do not contain paradoxes, however, as originally posed, they do contain ambiguities. We show that these ambiguities are removed by following our geometric derivation.