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arXiv · 2504.14215

Hidden Zeros and $2$-split via BCFW Recursion Relation

Bo Feng·Liang Zhang·Kang Zhou
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Abstract

In this paper, we provide another angle to understand recent discoveries, i.e., the hidden zeros and corresponding 2-split behavior using the BCFW recursion relation. For the hidden zeros, we show that although the BCFW recursion relation is not directly applicable for computing amplitudes of the non-linear sigma model, we can indeed prove the zeros using the modified BCFW recursion relation. Our work also indicates that for the 2-split to hold, the current should be carefully defined.

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Bo Feng, Liang Zhang, Kang Zhou. 2025-04-19. Hidden Zeros and $2$-split via BCFW Recursion Relation. https://arxiv.org/abs/2504.14215

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