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Carroll Expansion of General Relativity

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arxiv 2112.12684 v5 pith:KB22IWTK submitted 2021-12-23 hep-th gr-qc

classification hep-thgr-qc
keywords carrollorderactionexpansiongenerallimitnext-to-leadingrelativity
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We study the small speed of light expansion of general relativity, utilizing the modern perspective on non-Lorentzian geometry. This is an expansion around the ultra-local Carroll limit, in which light cones close up. To this end, we first rewrite the Einstein-Hilbert action in pre-ultra-local variables, which is closely related to the 3+1 decomposition of general relativity. At leading order in the expansion, these pre-ultra-local variables yield Carroll geometry and the resulting action describes the electric Carroll limit of general relativity. We also obtain the next-to-leading order action in terms of Carroll geometry and next-to-leading order geometric fields. The leading order theory yields constraint and evolution equations, and we can solve the evolution analytically. We furthermore construct a Carroll version of Bowen-York initial data, which has associated conserved boundary linear and angular momentum charges. The notion of mass is not present at leading order and only enters at next-to-leading order. This is illustrated by considering a particular truncation of the next-to-leading order action, corresponding to the magnetic Carroll limit, where we find a solution that describes the Carroll limit of a Schwarzschild black hole. Finally, we comment on how a cosmological constant can be incorporated in our analysis.

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Cited by 20 Pith papers

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  5. Quantum Fluctuations and Newton-Cartan Geometry for Non-Relativistic de Sitter space

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  10. On Carrollian and Celestial Correlators in General Dimensions

    hep-th 2025-08 conditional novelty 6.0 of 10

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  11. Carroll Geometry Meets De Sitter Space via Holography

    hep-th 2025-06 conditional novelty 6.0 of 10

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    hep-th 2025-05 conditional novelty 6.0 of 10

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    A Maxwellian extension of flat Liouville theory is derived as the boundary dual of Maxwell-invariant 2+1 Chern-Simons gravity, and is shown to match a geometric action and a Carrollian expansion of the AdS3 dual.

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  19. A time-like window into tensionless worldsheets

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