Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-04-25
Class.Quant.Grav. 18 (2001) 3611-3628
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Latex, 27 pages, added material on the `covariant' version of Poisson brackets. We explicitly define the extended history spac
Scientific paper
10.1088/0264-9381/18/17/314
We show that representations of the group of spacetime diffeomorphism and the Dirac algebra both arise in a phase-space histories version of canonical general relativity. This is the general-relativistic analogue of the novel time structure introduced previously in history theory: namely, the existence in non-relativistic physics of two types of time translation; and the existence in relativistic field theory of two distinct Poincare groups.
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