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- W3100138219 abstract "To find boundary contributions is a rather difficult problem when applying the BCFW recursion relation. In this paper, we propose an approach to bypass this problem by calculating general tree amplitudes that contain no polynomial using factorization limits. More explicitly, we construct an expression iteratively, which produces the correct factorization limits for all physical poles, and does not contain other poles, then it should be the correct amplitude. To some extent, this approach can be considered as an alternative way to find boundary contributions. To demonstrate our approach, we present several examples: $$phi ^4$$ theory, pure gauge theory, Einstein–Maxwell theory, and Yukawa theory. While the amplitude allows the existence of polynomials which satisfy the correct mass dimension and helicities, this approach is not applicable to determining the full amplitude." @default.
- W3100138219 created "2020-11-23" @default.
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- W3100138219 date "2015-04-01" @default.
- W3100138219 modified "2023-09-27" @default.
- W3100138219 title "General tree-level amplitudes by factorization limits" @default.
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- W3100138219 doi "https://doi.org/10.1140/epjc/s10052-015-3391-z" @default.
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