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PreprintCC BY 4.0arXiv

Superdilations at Schwarzschild null infinity

  • Marco Refuto
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Abstract

Relying on the definition of asymptotic conformal Killing horizons, the generators of asymptotic conformal symmetries at future null infinity in Schwarzschild space-time are considered. The algebra they close is an extended version of the BMS one due to the emergence of superdilations. Several features are then studied, such as the related non-trivial charge, ruling out the hypothesis that superdilations are pure gauge transformations. Their effect on a pair of celestial observers can be understood as an angle-dependent redshift, connected to the local non-vanishing flux of the charge.

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Cite

BibTeXRIS
BibTeX
@misc{refuto2026superdilations,
  title = {{Superdilations at Schwarzschild null infinity}},
  author = {Marco Refuto},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2605.26296},
  eprint = {2605.26296},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.26296},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Superdilations at Schwarzschild null infinity
AU  - Marco Refuto
PY  - 2026
DA  - 2026/09/01
PB  - arXiv
DO  - 10.48550/arxiv.2605.26296
UR  - https://arxiv.org/abs/2605.26296
AB  - Relying on the definition of asymptotic conformal Killing horizons, the generators of asymptotic conformal symmetries at future null infinity in Schwarzschild space-time are considered. The algebra they close is an extended version of the BMS one due to the emergence of superdilations. Several features are then studied, such as the related non-trivial charge, ruling out the hypothesis that superdilations are pure gauge transformations. Their effect on a pair of celestial observers can be understood as an angle-dependent redshift, connected to the local non-vanishing flux of the charge.
ER  -