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Linking Past and Future Null Infinity in Three Dimensions

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arxiv 1701.06573 v2 pith:Q5R7NZCG submitted 2017-01-23 hep-th gr-qc

Stefan Prohazka , Jakob Salzer , Friedrich Schöller This is my paper · ORCID
classification hep-thgr-qc
keywords mappingnullasymptoticfutureinfinitypastsymmetryconservation
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We provide a mapping between past null and future null infinity in three-dimensional flat space, using symmetry considerations. From this we derive a mapping between the corresponding asymptotic symmetry groups. By studying the metric at asymptotic regions, we find that the mapping is energy preserving and yields an infinite number of conservation laws.

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  1. Soft gravitons in three dimensions

    hep-th 2024-11 conditional novelty 7.0 of 10

    Three-dimensional flat-space gravity, despite having no propagating gravitons, exhibits an infrared triangle: a soft graviton theorem, BMS3 asymptotic symmetries, and gravitational memory effects, all equivalent throu...

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