Gravitational Decoherence: A Thematic Overview

Understand

Gravitational decoherence (GD) refers to the effects of gravity in actuating the classical appearance of a quantum system.

• Because the underlying processes involve issues in general relativity (GR), quantum field theory (QFT) and quantum information, GD has fundamental theoretical significance.
• There is a great variety of GD models, many of them involving physics that diverge from GR and/or QFT.
• This overview has two specific goals along one central theme: (i) present theories of GD based on GR and QFT and explore their experimental predictions; (ii) place other theories of GD under the scrutiny of GR and QFT, and point out their theoretical differences.