A left-handed simplicial action for Euclidean general relativity

Published under licence by IOP Publishing Ltd
, , Citation Michael P Reisenberger 1997 Class. Quantum Grav. 14 1753 DOI 10.1088/0264-9381/14/7/012

0264-9381/14/7/1753

Abstract

An action for simplicial Euclidean general relativity involving only left-handed fields is presented. The simplicial theory is shown to converge to continuum general relativity in the Plebanski formulation as the simplicial complex is refined. This contrasts with the Regge model for which Miller and Brewin have shown that the full field equations are much more restrictive than Einstein's in the continuum limit. The action and field equations of the proposed model are also significantly simpler than those of the Regge model when written directly in terms of their fundamental variables.

An entirely analogous hypercubic lattice theory, which approximates Plebanski's form of general relativity, is also presented.

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10.1088/0264-9381/14/7/012