25 citations · 222 across the 24 of their papers we have counts for
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gr-qc2017★ 13 cited
From path integrals to the Wheeler-DeWitt equation: Time evolution in spacetimes with a spatial boundary
Justin C. Feng, Richard A. Matzner
We reexamine the relationship between the path integral and canonical formulation of quantum general relativity. In particular, we present a formal derivation of the Wheeler-DeWitt…
gr-qc2017★ 14 cited
The Weiss Variation of the Gravitational Action
Justin C. Feng, Richard A. Matzner
The Weiss variational principle in mechanics and classical field theory is a variational principle which allows displacements of the boundary. We review the Weiss variation in mech…