Boundary Operators of BCFW Recursion Relation

Abstract

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.

20 pages, 2 figures

References in corpus (6)

• The All-Loop Integrand For Scattering Amplitudes in Planar N=4 SYM
• Loops and trees
• Simple Recursion Relations for General Field Theories
• Determination of Boundary Contributions in Recursion Relation
• On Multi-step BCFW Recursion Relations
• General tree-level amplitudes by factorization limits

Cited by in corpus (5)

• A Periodic Table of Effective Field Theories
• Form Factor and Boundary Contribution of Amplitude
• Note on recursion relations for the $\mathcal{Q}$-cut representation
• Off-shell amplitudes as boundary integrals of analytically continued Wilson line slope
• Boundary Contributions of On-shell Recursion Relations With Multiple-line Deformation