On AdS$_4$ deformations of celestial symmetries
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929291024924672 |
|---|---|
| author | Bittleston, Roland Bogna, Giuseppe Heuveline, Simon Kmec, Adam Mason, Lionel Skinner, David |
| author_facet | Bittleston, Roland Bogna, Giuseppe Heuveline, Simon Kmec, Adam Mason, Lionel Skinner, David |
| contents | Celestial holography has led to the discovery of new symmetry algebras arising from the study of collinear limits of perturbative gravity amplitudes in flat space. We explain from the twistor perspective how a non-vanishing cosmological constant $Λ$ naturally modifies the celestial chiral algebra. The cosmological constant deforms the Poisson bracket on twistor space, so the corresponding deformed algebra of Hamiltonians under the new bracket is automatically consistent. This algebra is equivalent to that recently found by Taylor and Zhu. We find a number of variations of the deformed algebra. We give the Noether charges arising from the expression of this algebra as a symmetry of the twistor action for self-dual gravity with cosmological constant. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_18011 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | On AdS$_4$ deformations of celestial symmetries Bittleston, Roland Bogna, Giuseppe Heuveline, Simon Kmec, Adam Mason, Lionel Skinner, David High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics Celestial holography has led to the discovery of new symmetry algebras arising from the study of collinear limits of perturbative gravity amplitudes in flat space. We explain from the twistor perspective how a non-vanishing cosmological constant $Λ$ naturally modifies the celestial chiral algebra. The cosmological constant deforms the Poisson bracket on twistor space, so the corresponding deformed algebra of Hamiltonians under the new bracket is automatically consistent. This algebra is equivalent to that recently found by Taylor and Zhu. We find a number of variations of the deformed algebra. We give the Noether charges arising from the expression of this algebra as a symmetry of the twistor action for self-dual gravity with cosmological constant. |
| title | On AdS$_4$ deformations of celestial symmetries |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics |
| url | https://arxiv.org/abs/2403.18011 |