Radiation reaction from soft theorems
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Radiation reaction (RR) terms at the third post-Minkowskian (3PM) order have recently been found to be instrumental in restoring smooth continuity between the non-relativistic, relativistic, and ultra-relativistic (including the massless) regimes. Here we propose a new and intriguing connection between RR and soft (bremsstrahlung) theorems which short-circuits the more involved conventional loop computations. Although first noticed in the context of the maximally supersymmetric theory, unitarity and analyticity arguments support the general validity of this 3PM-order connection that we apply, in particular, to Einstein's gravity and to its Jordan-Brans-Dicke extension. In the former case we find full agreement with a recent result by Damour obtained through a very different reasoning. (C) 2021 The Author(s). Published by Elsevier B.V.
Originalsprog | Engelsk |
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Artikelnummer | 136379 |
Tidsskrift | Physics Letters B |
Vol/bind | 818 |
Antal sider | 9 |
ISSN | 0370-2693 |
DOI | |
Status | Udgivet - 10 jul. 2021 |
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