Consistent discretizations for classical and quantum general relativity

Details Consistent discretizations for classical and quantum general relativity Consistent discretizations for classical and quantum general relativity

2001-08-24

arxiv.org/abs/gr-qc/0108062v1

In "Gravity, astrophysics and strings @ the Black Sea", P. Fiziev, M. Todorov editors, St Kliment Ohridski University Press (2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, RevTeX, no figures

Scientific paper

We consider discretizations of the Einstein action of general relativity such that the resulting discrete equations of motion form a consistent constrained system. Upon ``spin foam'' quantization of the system, consistency allows a natural way of recovering the correct semi-classical theory. A consistent set of approximations to the Einstein equations could also have implications for numerical relativity and for the construction of approximate classical observables for the theory.

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