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gr-qc1998
't Hooft's Polygon Approach Hyperbolically Revisited
Helia R. Hollmann, Ruth M. Williams
The initial data in the polygon approach to (2+1)D gravity coupled to point particles are constrained by the vertex equations and the particle equations. We establish the hyperboli…
gr-qc1998
The asymptotics of an amplitude for the 4-simplex
John W. Barrett, Ruth M. Williams
An expression for the oscillatory part of an asymptotic formula for the relativistic spin network amplitude for a 4-simplex is given. The amplitude depends on specified areas for e…