Sum-over-histories origin of the composition laws of relativistic quantum mechanics and quantum cosmology
Jonathan Halliwell, Miguel Ortiz
Abstract
The scope of the paper has been broadened to include a more complete discussion of the following topics: The derivation of composition laws in quantum cosmology. The connection between the existence of a composition law in the sum over histories approach to relativistic quantum mechanics and quantum cosmology, and the existence of a canonical formulation.
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