Notes on the BMS group in three dimensions: II. Coadjoint representation (1502.00010v3)

Published 30 Jan 2015 in hep-th and gr-qc

Abstract: The coadjoint representation of the BMS$_3$ group, which governs the covariant phase space of three-dimensional asymptotically flat gravity, is investigated. In particular, we classify coadjoint BMS$_3$ orbits and show that intrinsic angular momentum is free of supertranslation ambiguities. Finally, the link with induced representations upon geometric quantization is discussed.

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