Light-cone distribution amplitudes (LCDAs) are essential nonperturbative quantities for theoretical predictions of exclusive high-energy processes in quantum chromodynamics (QCD). We demonstrate the prospect of calculating LCDAs on a quantum computer by applying a recently proposed quantum algorithm, with staggered fermions, to the simulation of the LCDA in the (1+1)-dimensional Nambu-Jona-Lasinio (NJL) model on classical hardware. The agreement between the result from the classical simulation of the quantum algorithm and that from exact diagonalization justifies the proposed quantum algorithm. We find that the resulting LCDA in the NJL model exhibits features shared with the LCDAs obtained from QCD.
@article{arxiv.2207.13258,
title = {Exploring Light-Cone Distribution Amplitudes from Quantum Computing},
author = {Tianyin Li and Xingyu Guo and Wai Kin Lai and Xiaohui Liu and Enke Wang and Hongxi Xing and Dan-Bo Zhang and Shi-Liang Zhu},
journal= {arXiv preprint arXiv:2207.13258},
year = {2023}
}
Comments
8 pages, 7 figures, published version in Sci.China Phys.Mech.Astron