SciPost Submission Page
Charges in the Extended BMS Algebra: Definitions and Applications
by M. Porrati
Submission summary
| Authors (as registered SciPost users): | Massimo Porrati |
| Submission information | |
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| Preprint Link: | scipost_202012_00003v1 (pdf) |
| Date accepted: | Jan. 29, 2021 |
| Date submitted: | Dec. 2, 2020, 7:17 a.m. |
| Submitted by: | Massimo Porrati |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 4th International Conference on Holography, String Theory and Discrete Approach in Hanoi (STRHAN2020) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
This is a review of selected topics from recent work on symmetry charges in asymptotically flat spacetime done by the author in collaboration with U. Kol and R. Javadinezhad. First we reinterpret the reality constraint on the boundary graviton as the gauge fixing of a new local symmetry, called dual supertranslations. This symmetry extends the BMS group and bears many similarities to the dual (magnetic) gauge symmetry of electrodynamics. We use this new gauge symmetry to propose a new description of the TAUB-NUT space that does not contain closed time-like curves. Next we summarize progress towards the definition of Lorentz and super-Lorentz charges that commute with supertranslations and with the soft graviton mode.
Author comments upon resubmission
The limit due to the new gauge symmetry being defined only asymptotically is made more explicit in the third bullet point after (13)
List of changes
Published as SciPost Phys. Proc. 4, 005 (2021)
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2021-1-14 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_202012_00003v1, delivered 2021-01-14, doi: 10.21468/SciPost.Report.2413