Quantum gravity and spin systems

Details Quantum gravity and spin systems Quantum gravity and spin systems

1994-12-14

arxiv.org/abs/hep-lat/9412073v1

Nucl.Phys.Proc.Suppl. 42 (1995) 710-712

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, uuencoded postscript file, contribution to the XII Int. Symp. on Lattice Field Theory, Bielefeld, Germany, 1994

Scientific paper

10.1016/0920-5632(95)00358-G

A new method for nonperturbative investigations of quantum gravity is presented in which the simplicial path integral is approximated by the partition function of a spin system. This facilitates analytical and numerical computations considerably. In two dimensions equivalence to an Ising model with ternary couplings is recovered. First simulations in four dimensions indicate strong similarities to the phase structure of original Regge theory.

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