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Modern Physics Letters B

A PRACTICAL QUANTUM MEANS FOR TESTING THE TIME-TRANSLATION THEORY?

Paul Bruney

Published May 20, 2009• 3 citations
Publisher

Abstract

The time-dilations that arise during quantum tunneling appear applicable to the time-translation thought experiment by Aharonov et al. It may be feasible to actually perform a test for communicating in reverse-time as described by Cramer.
DOI
10.1142/s0217984909019648

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Abstract The universality of time dilation is sometimes misunderstood, with claims that it applies exclusively to light clocks and not to mechanical clocks or other material objects, including biological entities. This leads to incorrect interpretations of experiments like the Hafele–Keating experiment, which actually confirm relativistic effects through the use of atomic clocks. To address this issue, we propose a thought experiment, inspired by Schrödinger’s cat, involving a ‘Sync-or-Die clock’, a device that combines a light clock and a mechanical stopwatch, with the life of Einstein’s cat, Tiger, depending on their synchronization. A straightforward analysis shows that both clocks experience time dilation equally, reinforcing the fact that time dilation is not limited to clocks based on light propagation but is a universal feature of Special Relativity.
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Translation-covariant Markovian master equations used in the description of decoherence and dissipation are considered in the general framework of Holevo’s results on the characterization of generators of covariant quantum dynamical semigroups. A general connection between the characteristic function of classical Lévy processes and loss of coherence of the statistical operator describing the center of mass degrees of freedom of a quantum system interacting through momentum transfer events with an environment is established. The relationship with both microphysical models and experimental realizations is considered, focusing in particular on recent interferometric experiments exploring the boundaries between classical and quantum world.