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-Kucha mechanism is applied in the case of general relativity coupled with 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. © 2009 IOP Publishing Ltd.
Original languageEnglish
Article number125002
Pages (from-to)-
JournalClassical and Quantum Gravity
Volume26
Issue number12
DOIs
Publication statusPublished - 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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