Time (a-)symmetry in a recollapsing quantum universe

Details Time (a-)symmetry in a recollapsing quantum universe Time (a-)symmetry in a recollapsing quantum universe

1994-03-10

arxiv.org/abs/gr-qc/9403020v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

12 pages, Contribution presented at Mazagon, Spain, October 1991

Scientific paper

It is argued that Hawking's `greatest mistake' may not have been a mistake at all. According to the canonical quantum theory of gravity for Friedmann type universes, any time arrows of general nature can only be correlated with that of the expansion. For recollapsing universes this seems to be facilitated in part by quantum effects close to their maximum size. Because of the resulting thermodynamical symmetry between expansion and (formal) collapse, black holes must formally become `white' during the collapse phase (while physically only expansion of the universe and black holes can be observed). It is conjectured that the quantum universe remains completely singularity-free in this way (except for the homogeneous singularity) if an appropriate boundary condition for the wave function is able to exclude {\it past} singularities (as is often assumed).

Affiliated with

Also associated with

No associations

Rating

Time (a-)symmetry in a recollapsing quantum universe does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Time (a-)symmetry in a recollapsing quantum universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time (a-)symmetry in a recollapsing quantum universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-91463