Time and Dirac Observables in Friedmann Cosmologies

Details Time and Dirac Observables in Friedmann Cosmologies Time and Dirac Observables in Friedmann Cosmologies

2008-01-28

arxiv.org/abs/0801.4257v1

Int.J.Theor.Phys.47:1479-1489,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

11 pages

Scientific paper

10.1007/s10773-007-9628-3

A cosmological time variable is emerged from the Hamiltonian formulation of
Friedmann model to measure the evolution of dynamical observables in the
theory. A set of observables has been identified for the theory on the null
hypersurfaces that its evolution is with respect to the volume clock introduced
by the cosmological time variable.

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