Definition of a time variable with Entropy of a perfect fluid in Canonical Quantum Gravity
arXiv:0807.3281 · doi:10.1088/0264-9381/26/12/125002
Abstract
The Brown-Kuchar 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.
arXiv comment13 pages, no figures. To be published in Classical and Quantum Gravity. v2: major changes
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Cited by in corpus (9)
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- Is Bianchi I a Bouncing Cosmology in the Wheeler-DeWitt picture?
- Nonsingular cosmology from evolutionary quantum gravity
- Time evolution in quantum cosmology
- Propagator of a scalar field on a stationary slowly varying gravitational background
- Two-dimensional quantum dilaton gravity and the quantized cosmological constant
- The Role of Entropy in the Evolutionary Quantization of the Isotropic Universe