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Radiation in Holography

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arxiv 2404.02146 v2 pith:PDZSD5GE submitted 2024-04-02 hep-th gr-qc

Luca Ciambelli , Sabrina Pasterski , Elisa Tabor This is my paper · ORCID
classification hep-thgr-qc
keywords flatspacetimesasymptoticallydimensionalradiationasymptoticboundarycelestial
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abstract

We show how to encode the radiative degrees of freedom in $4$-dimensional asymptotically AdS spacetimes, using the boundary Cotton and stress tensors. Background radiation leads to a reduction of the asymptotic symmetry group, in contrast to asymptotically flat spacetimes, where a non-vanishing news tensor does not restrict the asymptotic symmetries. Null gauges, such as $\Lambda$-BMS, provide a framework for AdS spacetimes that include radiation in the flat limit. We use this to check that the flat limit of the radiative data matches the expected definition in intrinsically asymptotically flat spacetimes. We further dimensionally reduce our construction to the celestial sphere, and show how the $2$-dimensional celestial currents can be extracted from the $3$-dimensional boundary data.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Octupolar Gravitational Radiation in de Sitter Spacetime

    gr-qc 2026-08 conditional novelty 6.0 of 10

    The metric perturbation from a localized source in de Sitter spacetime is derived at octupolar order in generalized harmonic gauge, including the cosmological tail, the first extension beyond quadrupole order.

  2. Gravitational Memory Beyond Null Infinity through Finite-Distance Carrollian Screens

    hep-th 2026-07 conditional novelty 6.0 of 10

    Finite-distance null screens carry a Carrollian memory whose leading tracefree large-radius part reproduces the standard Bondi displacement memory in Robinson–Trautman spacetimes.

  3. Nonperfect Carrollian Fluids Through Holography

    hep-th 2026-01 conditional novelty 4.0 of 10

    Bulk gravitational radiation, diagnosed by the Fernández-Álvarez–Senovilla criterion, is dual to dissipative (Carrollian) boundary-fluid data, with an entropy-flux law and a Robinson-Trautman worked example.

  4. Bridging time across null horizons

    gr-qc 2025-02 conditional novelty 4.0 of 10

    A unified 'null-transverse' and 'bridge' framework treats horizon-penetrating and hyperboloidal time coordinates as regular stationary foliations across null horizons, with several new coordinate examples given.

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