Multi-nucleon matrix elements on the lattice with the Feynman-Hellmann theorem

2025/05/06 by Humphrey, N., Can, K. U., Horsley, R. +5
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat)

paper · doi:10.48550/arxiv.2505.03182

Abstract

This work presents the first calculation of the lowest moment of the forward Compton structure function F₂ for a multi-nucleon deuteron-like state using Feynman-Hellmann lattice QCD techniques. Using this result as a prototypical example, we chart a course for the systematic study of multi-nucleon structure by building on techniques developed to optimise the computation of the factorially increasing number of Wick contraction terms required to calculate multi-nucleon matrix elements via lattice QCD.

Citations

• Novel Algorithms for Computing Correlation Functions of Nuclei

Related

• The Compton Amplitude, lattice QCD and the Feynman-Hellmann approach
• The Compton amplitude and nucleon structure functions in lattice QCD
• Investigating the low moments of the nucleon structure functions in lattice QCD
• Scaling and higher twist in the nucleon Compton amplitude
• Lattice QCD for Precision Nucleon Matrix Elements