Higher-Point Integrands in N=4 super Yang-Mills Theory

TL;DR

This paper computes multi-loop integrands for five to seven-point correlation functions in N=4 super Yang-Mills theory, advancing the understanding of higher-point interactions and testing integrability conjectures.

Contribution

It introduces two methods for calculating higher-point integrands at two and three loops, significantly expanding the known data for such correlators.

Findings

Computed five-, six-, and seven-point two-loop integrands.

Calculated five-point three-loop integrand.

Extracted four-point function of Konishi and three twenty-prime operators.

Abstract

We compute the integrands of five-, six-, and seven-point correlation functions of twenty-prime operators with general polarizations at the two-loop order in N=4 super Yang-Mills theory. In addition, we compute the integrand of the five-point function at three-loop order. Using the operator product expansion, we extract the two-loop four-point function of one Konishi operator and three twenty-prime operators. Two methods were used for computing the integrands. The first method is based on constructing an ansatz, and then numerically fitting for the coefficients using the twistor-space reformulation of N=4 super Yang-Mills theory. The second method is based on the OPE decomposition. Only very few correlator integrands for more than four points were known before. Our results can be used to test conjectures, and to make progresses on the integrability-based hexagonalization approach for correlation functions.