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arXiv · 1606.06292

The equivalence principle and QFT: Can a particle detector tell if we live inside a hollow shell?

Keith K. Ng·Robert B. Mann·Eduardo Martin-Martinez
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Abstract

We show that a particle detector can distinguish the interior of a hollow shell from flat space for switching times much shorter than the light-crossing time of the shell, even though the local metrics are indistinguishable. This shows that a particle detector can read out information about the non-local structure of spacetime even when switched on for scales much shorter than the characteristic scale of the non-locality.

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Keith K. Ng, Robert B. Mann, Eduardo Martin-Martinez. 2016-06-20. The equivalence principle and QFT: Can a particle detector tell if we live inside a hollow shell?. https://doi.org/10.1103/physrevd.94.104041

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