The building blocks of asymptotically flat spacetimes

Fuente: arXiv
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Main Author: Ahmad, Shadi Ali
Format: Preprint
Published: 2025
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author Ahmad, Shadi Ali
author_facet Ahmad, Shadi Ali
contents The classification of all possible induced representations arising from theories admitting a Poincaré symmetry has molded our very conception of particles in flat space. In this note, we argue that if one takes the same viewpoint on the asymptotic symmetry group instead of the global one, the familiar relativistic classification is enhanced to provide a new notion of excitations in asymptotically flat spacetimes. These excitations blur the line between the quantum description of a particle and a spacetime geometry, and will appear in any theory with the same symmetry. By interacting together, they produce both the geometry of and propagating particles in spacetime.
format Preprint
id arxiv_https___arxiv_org_abs_2506_11190
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The building blocks of asymptotically flat spacetimes
Ahmad, Shadi Ali
High Energy Physics - Theory
General Relativity and Quantum Cosmology
The classification of all possible induced representations arising from theories admitting a Poincaré symmetry has molded our very conception of particles in flat space. In this note, we argue that if one takes the same viewpoint on the asymptotic symmetry group instead of the global one, the familiar relativistic classification is enhanced to provide a new notion of excitations in asymptotically flat spacetimes. These excitations blur the line between the quantum description of a particle and a spacetime geometry, and will appear in any theory with the same symmetry. By interacting together, they produce both the geometry of and propagating particles in spacetime.
title The building blocks of asymptotically flat spacetimes
topic High Energy Physics - Theory
General Relativity and Quantum Cosmology
url https://arxiv.org/abs/2506.11190