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arXiv · 2604.13430

Quantum computing for effective nuclear lattice model

Zhushuo Liu·Jia-ai Shi·Bing-Nan Lu·Xiaosi Xu
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Abstract

Nuclear lattice effective field theory has become an important framework for quantum many-body calculations in nuclear physics, yet its classical implementation remains increasingly challenging for more general interactions and larger systems. In this work, we develop a quantum-computing framework for a three-dimensional nuclear lattice model. We construct a variational quantum eigensolver framework and systematically compare the Jordan-Wigner and Gray code encodings. Our analysis shows that for the few-body systems considered here, Gray code combined with symmetry reduction yields a substantially more compact qubit representation. Based on this framework, we perform numerical studies for $^{2}\mathrm{H}$, $^{3}\mathrm{H}$, and $^{4}\mathrm{He}$ on finite lattices. The calculated ground-state energies exhibit a clear approach toward the corresponding experimental binding energies as the lattice size increases. These results provide a proof-of-principle foundation for future quantum simulations of nuclear many-body problems.

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Zhushuo Liu, Jia-ai Shi, Bing-Nan Lu, Xiaosi Xu. 2026-04-15. Quantum computing for effective nuclear lattice model. https://arxiv.org/abs/2604.13430

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