404 citations · 3.5k across the 79 of their papers we have counts for
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gr-qc1998★ 4 cited
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…
math.QA1998
The classical evaluation of relativistic spin networks
John W. Barrett
The evaluation of a relativistic spin network for the classical case of the Lie group SU(2) is given by an integral formula over copies of SU(2). For the graph determined by a 4-si…