Generalized BMS algebra at timelike infinity
| Autor: | Aniket Khairnar, Arpan Kundu, Anupam A. H |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
High Energy Physics - Theory
Physics 010308 nuclear & particles physics Group (mathematics) media_common.quotation_subject Null (mathematics) FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Symmetry group Infinity 01 natural sciences General Relativity and Quantum Cosmology Algebra High Energy Physics - Theory (hep-th) 0103 physical sciences Minkowski space Lie algebra Homogeneous space Vector field 010306 general physics media_common |
| Zdroj: | Physical Review |
| Popis: | BMS group (and it's various generalizations) at null infinity have been studied extensively in the literature as the symmetry group of asymptotically flat spacetimes. The intricate relationship between soft theorems and the BMS symmetries have also motivated the definition of such asymptotic symmetries to time-like infinity. Although the vector fields that generate the (generalized) BMS algebra at time-like infinity was defined in the literature, the algebra has not been investigated. In this paper, we fill this gap. We show that the super-translations and vector fields that generate sphere diffeomorphisms close under the modified Lie bracket proposed by Barnich et al. 32 pages |
| Databáze: | OpenAIRE |
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