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Modeling the decoherence of spacetime

Authors
  • Whelan, John T.
Type
Published Article
Publication Date
May 06, 1998
Submission Date
Dec 11, 1996
Identifiers
DOI: 10.1103/PhysRevD.57.768
arXiv ID: gr-qc/9612028
Source
arXiv
License
Unknown
External links

Abstract

The question of whether unobserved short-wavelength modes of the gravitational field can induce decoherence in the long-wavelength modes (``the decoherence of spacetime'') is addressed using a simplified model of perturbative general relativity, related to the Nordstrom-Einstein-Fokker theory, where the metric is assumed to be conformally flat. For some long-wavelength coarse grainings, the Feynman-Vernon influence phase is found to be effective at suppressing the off-diagonal elements of the decoherence functional. The requirement that the short-wavelength modes be in a sufficiently high-temperature state places limits on the applicability of this perturbative approach.

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