Out-of-time-order asymptotic observables are quasi-isomorphic to time-ordered amplitudes

Abstract Asymptotic observables in quantum field theory beyond the familiar S-matrix have recently attracted much interest, for instance in the context of gravity waveforms. Such observables can be understood in terms of Schwinger-Keldysh-type ‘amplitudes’ computed by a set of modified Feynman rules...

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Bibliographic Details
Main Authors: Leron Borsten, D. Simon H. Jonsson, Hyungrok Kim
Format: Article
Language:English
Published: SpringerOpen 2024-08-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP08(2024)074
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