Twistor and Polytope Interpretations for Subleading Color One-Loop Amplitudes

Details Twistor and Polytope Interpretations for Subleading Color One-Loop Amplitudes Twistor and Polytope Interpretations for Subleading Color One-Loop Amplitudes

2011-04-14

arxiv.org/abs/1104.2752v3

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 2 figures; typos corrected, citations added; fig2 modified, fig. 1 and explanations added, mostly around eq. 2.11; v

Scientific paper

We use the relation of the one-loop subleading-color amplitudes to the one-loop $n$-point leading color amplitudes in ${\cal N}=4$ SYM, to derive a polytope interpretation for the former in the $MHV$ case, and a representation in momentum twistor space for the general $N^kMHV$ case. These techniques are explored in detail for the 5-point and 6-point amplitudes. We briefly discuss the implications for IR divergences.

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