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Coadjoint representation of the BMS group on celestial Riemann surfaces

par Barnich, Glenn ;Ruzziconi, Romain
Référence Journal of High Energy Physics, 2021, 6
Publication Publié, 2021-06

Article révisé par les pairs

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Résumé :

A bstract 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 worked out for different choices of bases. The conserved current algebra of non-radiative asymptotically flat spacetimes is explicitly interpreted in these terms.