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キーワード:
High Energy Physics - Theory, hep-th
要旨:
We propose a recursive formula for super Yang-Mills color-ordered N-point
tree amplitudes based on the cohomology of pure spinor superspace in ten
space-time dimensions. The amplitudes are organized into BRST covariant
building blocks with diagrammatic interpretation. Manifestly cyclic expressions
(no longer than one line each) are explicitly given up to N = 10 and higher leg
generalizations are straightforward.