Fluid Entropy as Time-Variable in Canonical Quantum Gravity

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The Brown-Kuchař mechanism is applied in the case of General Relativity coupled with the Schutz' model for a perfect fluid. Using the canonical formalism and manipulating the set of modified constraints one is able to recover the definition of a time evolution operator, i.e. a physical Hamiltonian, expressed as a functional of gravitational variables and the entropy.
5 pages, Proceedings of The 3rd Stueckelberg Workshop on Relativistic Field Theories

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/225888

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0904.0521
 http://arxiv.org/abs/0904.0521

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arXiv