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Eliminating spurious poles from gauge-theoretic amplitudes
Journal of High Energy Physics, no. 5 (2013): 135
摘要
This note addresses the problem of spurious poles in gauge-theoretic
scattering amplitudes. New twistor coordinates for the momenta are introduced,
based on the concept of dual conformal invariance. The cancellation of spurious
poles for a class of NMHV amplitudes is greatly simplified in these
coordinates. The poles are eliminated altoge...更多
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