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Go Fishing with Alice: Compatible Carrollian and Poisson Structures

  • Andrew James Bruce
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Abstract

We introduce, motivated by noncommutative Carrollian geometry, the notion of a Carrollian--Poisson bundle understood as a Carrollian manifold with a compatible Poisson structure. Compatibility is expressed as the inclusion of the Carroll distribution in the image of the Poisson anchor. We explore the geometric consequences of this compatibility and present several simple examples of Carrollian--Poisson bundles, including the (outer) Kerr horizon, the BTZ horizon, and future null infinity. Furthermore, we establish that every Carrollian--Poisson bundle can be equipped with a Vaisman (contravariant) connection that is both metric-compatible and clock-compatible, and thus geometric kinematics can be defined and studied.

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Cite

BibTeXRIS
BibTeX
@misc{bruce2026fishing,
  title = {{Go Fishing with Alice: Compatible Carrollian and Poisson Structures}},
  author = {Andrew James Bruce},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.05573},
  eprint = {2609.05573},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.05573},
}
RIS
TY  - UNPB
TI  - Go Fishing with Alice: Compatible Carrollian and Poisson Structures
AU  - Andrew James Bruce
PY  - 2026
DA  - 2026/09/04
PB  - arXiv
DO  - 10.48550/arxiv.2609.05573
UR  - https://arxiv.org/abs/2609.05573
AB  - We introduce, motivated by noncommutative Carrollian geometry, the notion of a Carrollian--Poisson bundle understood as a Carrollian manifold with a compatible Poisson structure. Compatibility is expressed as the inclusion of the Carroll distribution in the image of the Poisson anchor. We explore the geometric consequences of this compatibility and present several simple examples of Carrollian--Poisson bundles, including the (outer) Kerr horizon, the BTZ horizon, and future null infinity. Furthermore, we establish that every Carrollian--Poisson bundle can be equipped with a Vaisman (contravariant) connection that is both metric-compatible and clock-compatible, and thus geometric kinematics can be defined and studied.
ER  -