Authors: Bo Feng Junqi Wang Yihong Wang Zhibai Zhang
Publish Date: 2010/01/08
Volume: 2010, Issue: 1, Pages: 19-
Abstract
The appearance of BCFW onshell 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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