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arXiv · 0807.3281

Definition of a time variable with Entropy of a perfect fluid in Canonical Quantum Gravity

Francesco Cianfrani·Giovanni Montani·Simone Zonetti
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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.

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Francesco Cianfrani, Giovanni Montani, Simone Zonetti. 2009-04-24. Definition of a time variable with Entropy of a perfect fluid in Canonical Quantum Gravity. https://doi.org/10.1088/0264-9381%2F26%2F12%2F125002

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