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2015

Boundary Operators of BCFW Recursion Relation

Jin, Qingjun, Feng, Bo

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We show that boundary contributions of BCFW recursions can be interpreted as the form factors of some composite operators which we call 'boundary operators'.

The boundary operators can be extracted from the operator product expansion of deformed fields.
We also present an algorithm to compute the boundary operators using path integral.

Boundary Operators of BCFW Recursion Relation · Around

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R. Britto, F. Cachazo and B. Feng, New recursion relations for tree amplitudes of gluons , Nucl.Phys. B715
2005
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R. Britto, F. Cachazo, B. Feng and E. Witten, Direct proof of tree-level recursion relation in Yang-Mills theory , Phys.Rev.Lett. 94
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Z. Bern, L. J. Dixon and D. A. Kosower, On-Shell Methods in Perturbative QCD , Annals Phys. 322
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N. Arkani-Hamed and J. Kaplan, On Tree Amplitudes in Gauge Theory and Gravity , JHEP 0804
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R. H. Boels, No triangles on the moduli space of maximally supersymmetric gauge theory , JHEP 1005
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B. Feng, J. Wang, Y. Wang and Z. Zhang, BCFW Recursion Relation with Nonzero Boundary Contribution , JHEP 1001
Original
2010
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