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2018

Triangulation of 2-loop MHV Amplituhedron from Sign Flips

Kojima, Ryota

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In this paper, we consider the triangulation of 2-loop MHV amplituhedron from "sign flip" definition.

Using the isomorphism between $m=2, k=2$ tree amplituhedron and 1-loop MHV physical amplituhedron, we found the direct triangulation of 2-loop MHV amplituhedron from sign flip.
This triangulation is different from the BCFW triangulation because of the structure of the cells.
And we also found a formula of the canonical form of $n$-point 2-loop MHV amplituhedron.

Triangulation of 2-loop MHV Amplituhedron from Sign Flips · Around

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Original
2007
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N. Arkani-Hamed, J. L. Bourjaily, F. Cachazo, A. Hodges, and J. Trnka, ”A Note on Polytopes for Scattering Amplitudes,” JHEP 1204
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