Six and seven loop Konishi from Luscher corrections

TL;DR

This paper derives six and seven loop formulas for the Konishi operator's anomalous dimension in N=4 SYM using Luscher corrections, providing high-precision numerical results and analytical fits to zeta values.

Contribution

It presents the first derivation of six and seven loop corrections for the Konishi operator using Luscher corrections from string theory, with analytical and numerical validation.

Findings

Derived six and seven loop formulas for Konishi anomalous dimension.

Numerical evaluation and analytical fitting of zeta values in the formulas.

Identified the limit of Luscher approach at eight loops due to double-wrapping corrections.

Abstract

In the present paper we derive six and seven loop formulas for the anomalous dimension of the Konishi operator in N=4 SYM from string theory using the technique of Luscher corrections. We derive analytically the integrand using the worldsheet S-matrix and evaluate the resulting integral and infinite sum using a combination of high precision numerical integration and asymptotic expansion. We use this high precision numerical result to fit the integer coefficients of zeta values in the final analytical answer. The presented six and seven loop results can be used as a cross-check with FiNLIE on the string theory side, or with direct gauge theory computations. The seven loop level is the theoretical limit of this Luscher approach as at eight loops double-wrapping corrections will appear.