Lattice gauge gravity

Details Lattice gauge gravity Lattice gauge gravity

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvd..43.1150k&link_type=abstract

Physical Review D (Particles and Fields), Volume 43, Issue 4, 15 February 1991, pp.1150-1156

Physics

7

Scientific paper

We propose a lattice gravity action based on the gauge-theory point of view. We avoid a problem, the action potentially going to infinity by taking the link length to a constant a (the lattice constant). By fixing the local Lorentz gauge freedom, we obtain a gauge-fixed version of the d-dimensional action as a sum of ad-2sinδ (δ=deficit angle) which is a compactified version of Regge calculus. The fermion gravity coupling term can be constructed in a similar way. We point out the possibility that this lattice gravity action approaches the Einstein action in the long-range limit if the action has an ultraviolet fixed point.

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