The Conditional Probability Interpretation of the Hamiltonian Constraint

Details The Conditional Probability Interpretation of the Hamiltonian Constraint The Conditional Probability Interpretation of the Hamiltonian Constraint

2004-06-09

arxiv.org/abs/gr-qc/0406034v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, no figures

Scientific paper

The Conditional Probability Interpretation (CPI), first introduced by Page and Wootters, is reviewed and refined. It is argued that in it's refined form the CPI is capable of answering various past criticisms. In particular, questions involving more than one clock time are described in detail, resolving the problems raised in Kuchar's ``reduction ad absurdum''. In the case of Parametrized Particle Dynamics, conventional quantum mechanics is recovered in the ideal clock limit. When E=0 is among the continuous spectrum of the Hamiltonian, the induced inner product is used to construct the physical Hilbert space $\clh_{\rm ph}$ from the generalized eigenvectors in (the topological dual of) $\clh_{\rm aux}$. This allows the CPI to be applied to these `continuous-spectrum' cases in a more rigorous fashion than that described previously. The discrete spectrum case is also treated.

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