PoS - Proceedings of Science
Volume 292 - Corfu Summer Institute 2016 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2016) - Recent Developments in Strings and Gravity
Illuminating Light Bending
E. Bjerrum-Bohr, J.F. Donoghue, B. Holstein, L. Planté and P. Vanhove*
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Pre-published on: October 04, 2017
Published on: October 05, 2017
The interactions of gravitons with spin-1 matter are calculated in parallel with the well known photon case. It is shown that graviton scattering amplitudes can be factorized into a product of familiar electromagnetic forms, and cross sections for various reactions are straightforwardly evaluated using helicity methods. Universality relations are identified. Extrapolation to zero mass yields scattering amplitudes for photon-graviton and graviton-graviton scattering. The phenomenon of light bending near a massive object, which is generally treated using classical general relativity, is discussed from alternative points of view.
DOI: https://doi.org/10.22323/1.292.0077
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