31 citations · 255 across the 24 of their papers we have counts for
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hep-th2014★ 17 cited
Determination of Boundary Contributions in Recursion Relation
Bo Feng, Kang Zhou, Chenkai Qiao +1
In this paper, we propose a new algorithm to systematically determine the missing boundary contributions, when one uses the BCFW on-shell recursion relation to calculate tree ampli…
hep-th2014★ 7 cited
General tree-level amplitudes by factorization limits
Kang Zhou, Chenkai Qiao
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…
hep-th2014★ 4 cited
Integral Reduction by Unitarity Method for Two-loop Amplitudes: A Case Study
Bo Feng, Jun Zhen, Rijun Huang +1
In this paper, we generalize the unitarity method to two-loop diagrams and use it to discuss the integral bases of reduction. To test out method, we focus on the four-point double-…