Fundamental decoherence from quantum gravity: a pedagogical review

Details Fundamental decoherence from quantum gravity: a pedagogical review Fundamental decoherence from quantum gravity: a pedagogical review

2006-03-22

arxiv.org/abs/gr-qc/0603090v1

Gen.Rel.Grav.39:1143-1156,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, dedicated to Octavio Obregon on his 60th birthday

Scientific paper

10.1007/s10714-007-0451-1

We present a discussion of the fundamental loss of unitarity that appears in quantum mechanics due to the use of a physical apparatus to measure time. This induces a decoherence effect that is independent of any interaction with the environment and appears in addition to any usual environmental decoherence. The discussion is framed self consistently and aimed to general physicists. We derive the modified Schroedinger equation that arises in quantum mechanics with real clocks and discuss the theoretical and potential experimental implications of this process of decoherence.

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