2024
DOI: 10.1007/jhep11(2024)124
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Logarithmic soft theorems and soft spectra

Francesco Alessio,
Paolo Di Vecchia,
Carlo Heissenberg

Abstract: Using universal predictions provided by classical soft theorems, we revisit the energy emission spectrum for gravitational scatterings of compact objects in the low-frequency expansion. We calculate this observable beyond the zero-frequency limit, retaining an exact dependence on the kinematics of the massive objects. This allows us to study independently the ultrarelativistic or massless limit, where we find agreement with the literature, and the small-deflection or post-Minkowskian (PM) limit, where we provi… Show more

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