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Bounds on photon scattering
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DOI：10.1007/JHEP10(2024)103.png)
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Abstract
En 中文
We study 2-to-2 scattering amplitudes of massless spin one particles in d = 4 space-time dimensions, like real world photons. We define a set of non-perturbative observables (Wilson coefficients) which describe these amplitudes at low energies. We use full non-linear unitarity to construct various novel numerical bounds on these observables. For completeness, we also rederive some bounds using positivity only. We discover and explain why some of these Wilson coefficients cannot be bounded.
Keywords:
Effective Field Theories
Nonperturbative Effects
Scattering Amplitudes
Journal
IF:
5.5
Papers:
3.9W
Citations:
13.7W