822 citations · 4.8k across the 39 of their papers we have counts for
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gr-qc2021★ 44 cited
Persistent gravitational wave observables: Curve deviation in asymptotically flat spacetimes
Alexander M. Grant, David A. Nichols
In the first paper in this series, a class of observables that generalized the gravitational wave memory effect were introduced and given the name "persistent gravitational wave ob…
gr-qc2021★ 12 cited
Classical and Quantized General-Relativistic Angular Momentum
Geoffrey Compère, David A. Nichols
Angular momentum at null infinity has a supertranslation ambiguity from the lack of a preferred Poincaré group and a similar ambiguity when the center-of-mass position changes as l…
gr-qc2021★ 9 cited
Definitions of (super) angular momentum in asymptotically flat spacetimes: Properties and applications to compact-binary mergers
Arwa Elhashash, David A. Nichols
The symmetries of asymptotically flat spacetimes in general relativity are given by the Bondi-Metzner-Sachs (BMS) group, though there are proposed generalizations of its symmetry a…