A note on the boundary contribution with bad deformation in gauge theory

Details A note on the boundary contribution with bad deformation in gauge theory A note on the boundary contribution with bad deformation in gauge theory

2010-04-08

arxiv.org/abs/1004.1282v3

Physics

High Energy Physics

High Energy Physics - Theory

16 pages, 7 figures

Scientific paper

Motivated by recently progresses in the study of BCFW recursion relation with nonzero boundary contributions for theories with scalars and fermions\cite{Bofeng}, in this short note we continue the study of boundary contributions of gauge theory with the bad deformation. Unlike cases with scalars or fermions, it is hard to use Feynman diagrams directly to obtain boundary contributions, thus we propose another method based on the ${\cal N}=4$ SYM theory. Using this method, we are able to write down a useful on-shell recursion relation to calculate boundary contributions from related theories. Our result shows the cut-constructibility of gauge theory even with the bad deformation in some generalized sense.

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