BCFW recursion relation with nonzero boundary contribution

被引：0
作者：
Bo Feng
Junqi Wang
Yihong Wang
Zhibai Zhang
机构：
[1] Zhejiang University,Center of Mathematical Science
[2] Zhejiang University,Physics Department
[3] Zhejiang University,Mathematics Department
来源：
Journal of High Energy Physics | / 2010卷
关键词：
Duality in Gauge Field Theories; Global Symmetries;
D O I：
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学科分类号：
摘要：
The appearance of BCFW on-shell recursion relation has deepen our understanding of quantum field theory, especially the one with gauge boson and graviton. To be able to write the BCFW recursion relation, the knowledge of boundary contributions is needed. So far, most applications have been constrained to the cases where the boundary contribution is zero. In this paper, we show that for some theories, although there is no proper deformation to annihilate the boundary contribution, its effects can be analyzed in simple way, thus we do able to write down the BCFW recursion relation with boundary contributions. The examples we will present in this paper include the λφ4 theory and Yukawa coupling between fermions and scalars.
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