Abstract
We demonstrate the relationship between the loss of coherence between contracting and expanding histories in the wave function of the Universe and particle creation from the gravitational field. In a minisuperspace model describing a spatially closed Robertson-Walker universe plus a quantum scalar field, the wave function of the Universe will decohere if and only if the corresponding semiclassical evolution leads to particle creation.
- Received 21 June 1990
DOI:https://doi.org/10.1103/PhysRevD.42.4066
©1990 American Physical Society
