Bondi-Metzner-Sachs Particles
We construct wave functions for unitary irreducible representations (UIRs) of the Bondi-Metzner-Sachs (BMS) group, i.e., BMS particles, and show that they describe quantum superpositions of (Poincaré) particles propagating on inequivalent gravity vacua. This follows from reconsidering McCarthy's classification of BMS group UIRs through a unique, Lorentz-invariant, but nonlinear, decomposition of supermomenta into hard and soft pieces.
Authors
- Laura Donnay (ORCID: https://orcid.org/0000-0002-7099-0463)
- Xavier Bekaert (ORCID: https://orcid.org/0000-0002-3748-5190)
- Yannick Herfray (ORCID: https://orcid.org/0000-0002-5646-4301)
Institutions
- Université de Tours (FR)
- Scuola Internazionale Superiore di Studi Avanzati (IT)
- University of Trieste (IT)
- Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT)
- Institut Denis Poisson (FR)
Publication Details
- Journal
- Physical Review Letters
- Published
- 2025-08-28
- DOI
- https://doi.org/10.1103/8376-fync
- Citations
- 5
- Primary Topic
- Black Holes and Theoretical Physics
- Type
- article
- Field-Weighted Citation Impact
- 9.35