Fluid Entropy as Time-Variable in Canonical Quantum Gravity
General Relativity and Quantum Cosmology
2009-04-07 v2
Abstract
The Brown-Kucha\v{r} 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.
Cite
@article{arxiv.0904.0521,
title = {Fluid Entropy as Time-Variable in Canonical Quantum Gravity},
author = {Francesco Cianfrani and Giovanni Montani and Simone Zonetti},
journal= {arXiv preprint arXiv:0904.0521},
year = {2009}
}
Comments
5 pages, Proceedings of The 3rd Stueckelberg Workshop on Relativistic Field Theories