Ehrenfest's Principle and the Problem of Time in Quantum Gravity

Details Ehrenfest's Principle and the Problem of Time in Quantum Gravity Ehrenfest's Principle and the Problem of Time in Quantum Gravity

1996-02-15

arxiv.org/abs/gr-qc/9602033v1

Nucl.Phys. B475 (1996) 339-360

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

20 pages, LATEX

Scientific paper

10.1016/0550-3213(96)00304-5

We elaborate on a proposal made by Greensite and others to solve the problem of time in quantum gravity. The proposal states that a viable concept of time and a sensible inner product can be found from the demand for the Ehrenfest equations to hold in quantum gravity. We derive and discuss in detail exact consistency conditions from both Ehrenfest equations as well as from the semiclassical approximation. We also discuss consistency conditions arising from the full field theory. We find that only a very restricted class of solutions to the Wheeler-DeWitt equation fulfills all consistency conditions. We conclude that therefore this proposal must either be abandoned as a means to solve the problem of time or, alternatively, be used as an additional boundary condition to select physical solutions from the Wheeler-DeWitt equation.

Affiliated with

Also associated with

No associations

Rating

Ehrenfest's Principle and the Problem of Time in Quantum Gravity 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 Ehrenfest's Principle and the Problem of Time in Quantum Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ehrenfest's Principle and the Problem of Time in Quantum Gravity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-322975