Classical limit of higher-spin string amplitudes
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Publication:6176454
DOI10.1007/JHEP06(2023)167arXiv2207.03947MaRDI QIDQ6176454
Author name not available (Why is that?)
Publication date: 25 July 2023
Published in: (Search for Journal in Brave)
Abstract: It has been shown that a special set of three-point amplitudes between two massive spinning states and a graviton reproduces the linearised stress-energy tensor for a Kerr black hole in the classical limit. In this work we revisit this result and compare it to the analysis of the amplitudes describing the interaction of leading Regge states of the open and closed superstring. We find an all-spin result for the classical limit of two massive spinning states interacting with a photon or graviton. This result differs from Kerr and instead matches the current four-vector and the stress-energy tensor generated by a classical string coupled to electromagnetism and gravity respectively. For the superstring amplitudes, contrary to the black-hole case, we find that the spin to infinity limit is necessary to reproduce the classical spin multipoles.
Full work available at URL: https://arxiv.org/abs/2207.03947
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