Post-Minkowskian scattering angle in Einstein gravity
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Publication:2225706
DOI10.1007/JHEP08(2020)038zbMATH Open1454.83008arXiv1910.09366OpenAlexW3105656404MaRDI QIDQ2225706
Author name not available (Why is that?)
Publication date: 10 February 2021
Published in: (Search for Journal in Brave)
Abstract: Using the implicit function theorem we demonstrate that solutions to the classical part of the relativistic Lippmann-Schwinger equation are in one-to-one correspondence with those of the energy equation of a relativistic two-body system. A corollary is that the scattering angle can be computed from the amplitude itself, without having to introduce a potential. All results are universal and provide for the case of general relativity a very simple formula for the scattering angle in terms of the classical part of the amplitude, to any order in the post-Minkowskian expansion.
Full work available at URL: https://arxiv.org/abs/1910.09366
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