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A geometric object whose volume is conjectured to be related to scattering amplitudes. It is used mostly in string theory.
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Relation between canonical forms and volume of polytopes
Références:
Ref $1$: Henriette Elvang, Yu-tin Huang: Scattering Amplitudes
Ref $2$: Jaroslav Trnka: The Amplituhedron
[For simplicity, the notations of the $2$ refs have been merged]
The area of a …