Four dimensional ambitwistor strings and form factors of local and Wilson line operators

Abstract

We consider the description of form factors of local and Wilson line operators (reggeon amplitudes) in N=4 SYM within the framework of four dimensional ambitwistor string theory. We present the explicit expressions for string composite operators corresponding to stress-tensor operator supermultiplet and Wilson line operator insertion. It is shown, that corresponding tree-level string correlation functions correctly reproduce previously obtained Grassmannian integral representations. As by product we derive four dimensional tree-level scattering equations representations for the mentioned form factors and formulate a simple gluing procedure used to relate operator form factors with on-shell amplitudes.

46 pages, 3 figures; v3: multiple changes in the text, typos corrected, references added

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Cited by in corpus (12)

• A Three-Point Form Factor Through Five Loops
• The Sudakov form factor at four loops in maximal super Yang-Mills theory
• Non-planar form factors of generic local operators via on-shell unitarity and color-kinematics duality
• From 4d Ambitwistor Strings to On Shell Diagrams and Back
• Full-color three-loop three-point form factors in N=4 SYM
• Spinor frame formalism for amplitudes and constrained superamplitudes of 10D SYM and 11D supergravity
• Ambitwistor strings and reggeon amplitudes in N=4 SYM
• A note on NMHV form factors from the Graßmannian and the twistor string
• Form factors from string amplitudes
• Analytic two-Loop four-point form factor of the stress-tensor supermultiplet in $\mathcal{N}=4$ SYM
• On-shell Methods for Form Factors in N=4 SYM and Their Applications
• One-loop amplitudes with an off-shell gluon