Positivity, Grassmannian geometry and simplex-like structures of scattering amplitudes
Abstract This article revisits and elaborates the significant role of positive geometry of momentum twistor Grassmannian for planar N=4 $$ \mathcal{N}=4 $$ SYM scattering amplitudes. First we establish the fundamentals of positive Grassmannian geometry for tree amplitudes, including the ubiquitous P...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | http://link.springer.com/article/10.1007/JHEP12(2017)147 |