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arXiv · 2111.15252

Spectral sum from Euclidean lattice correlators and determination of renormalization constants

Tsutomu Ishikawa·Shoji Hashimoto·Takashi Kaneko
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Abstract

We propose a new method to renormalize lattice operators. The method is based on the technique to compute the spectral sum appearing in the Shifman-Vainshtein-Zakharov QCD sum rule from lattice correlators. The application of this technique to the light quark system is useful for operator renormalization as well as for the test of perturbative QCD and OPE. We determine the renormalization constant of the vector current and discuss extensions to other current operators.

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Tsutomu Ishikawa, Shoji Hashimoto, Takashi Kaneko. 2021-11-30. Spectral sum from Euclidean lattice correlators and determination of renormalization constants. https://arxiv.org/abs/2111.15252

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