Representations of Spacetime Alternatives and Their Classical Limits

Details Representations of Spacetime Alternatives and Their Classical Limits Representations of Spacetime Alternatives and Their Classical Limits

2005-03-22

arxiv.org/abs/quant-ph/0503182v2

Phys.Rev. A72 (2005) 022105

Physics

Quantum Physics

11 pages, 10 figures, Revtex4, minor corrections

Scientific paper

10.1103/PhysRevA.72.022105

Different quantum mechanical operators can correspond to the same classical quantity. Hermitian operators differing only by operator ordering of the canonical coordinates and momenta at one moment of time are the most familiar example. Classical spacetime alternatives that extend over time can also be represented by different quantum operators. For example, operators representing a particular value of the time average of a dynamical variable can be constructed in two ways: First, as the projection onto the value of the time averaged Heisenberg picture operator for the dynamical variable. Second, as the class operator defined by a sum over those histories of the dynamical variable that have the specified time-averaged value. We show both by explicit example and general argument that the predictions of these different representations agree in the classical limit and that sets of histories represented by them decohere in that limit.

Affiliated with

Also associated with

No associations

Rating

Representations of Spacetime Alternatives and Their Classical Limits 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 Representations of Spacetime Alternatives and Their Classical Limits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Representations of Spacetime Alternatives and Their Classical Limits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-135282