404 citations · 3.5k across the 79 of their papers we have counts for
Showing 1997Show all
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gr-qc1997★ 80 cited
A note on area variables in Regge calculus
John W. Barrett, Martin Rocek, Ruth M. Williams
We consider the possibility of setting up a new version of Regge calculus in four dimensions with areas of triangles as the basic variables rather than the edge-lengths. The diffic…
gr-qc1997★ 404 cited
Relativistic spin networks and quantum gravity
John W. Barrett, Louis Crane
Relativistic spin networks are defined by considering the spin covering of the group SO(4), SU(2) times SU(2). Relativistic quantum spins are related to the geometry of the 2-dimen…
gr-qc1997
Sources of symmetric potentials
John W. Barrett
Laboratory experiments on gravitation are usually performed with objects of constant density, so that the analysis of the forces concerns only the geometry of their shape. In an id…