246 citations · 1.3k across the 28 of their papers we have counts for
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Coadjoint representation of the BMS group on celestial Riemann surfaces
Glenn Barnich, Romain Ruzziconi
The coadjoint representation of the BMS group in four dimensions is constructed in a formulation that covers both the sphere and the punctured plane. The structure constants are wo…
Conserved currents in the Palatini formulation of general relativity
Glenn Barnich, Pujian Mao, Romain Ruzziconi
We derive the expressions for the local, on-shell closed co-dimension 2 forms in the Palatini formulation of general relativity and explicitly show their on-shell equivalence to th…
BMS current algebra in the context of the Newman-Penrose formalism
Glenn Barnich, Pujian Mao, Romain Ruzziconi
Starting from an action principle adapted to the Newman-Penrose formalism, we provide a self-contained derivation of BMS current algebra, which includes the generalization of the B…
Conserved currents in the Cartan formulation of general relativity
Glenn Barnich, Pujian Mao, Romain Ruzziconi
We derive the expressions for the local, on-shell closed co-dimension 2 forms in the Cartan formulation of general relativity and explicitly show their equivalence to those of the…