Extrinsic time in quantum cosmology
Sep, 1994Citations per year
Abstract: (DESY)
An extrinsic time is identified in most isotropic and homogeneous cosmological models by matching them with the ideal clock - a parametrized system whose only ``degree of freedom'' is physical time -. Once this matching is established, the cosmological models are quantized in the same way as the ideal clock. This supposes the insertion of a time dependent operator in the inner product between Dirac physical states, yielding a unitary theory equivalent to the phase space reduced theory.- quantum cosmology
- cosmological model
- quantization
- phase space
- Hamiltonian formalism
- time
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