arXiv:2604.24337quant-phcond-mat.dis-nn2026-04

用双曲递归网络构建新型量子态,性能优于传统方法。

New non-Euclidean neural quantum states from hyperbolic Lorentz recurrent architectures

  • 基于双曲洛伦兹递归结构设计新量子态模型
  • 在100自旋海森堡模型中,参数更少却表现更优
  • 适合研究具有层级交互结构的量子多体系统

本文构建了基于双曲洛伦兹递归架构(RNN/GRU)的新非欧几里得神经量子态(NQS),并首次提出庞加莱RNN NQS。结合已有的庞加莱双曲GRU NQS,扩展了此前仅限于庞加莱双曲GRU的非欧类NQS。在包含100个自旋的海森堡J1J2和J1J2J3模型的变分蒙特卡罗(VMC)设置下,四种双曲RNN/GRU NQS变体始终能比同架构的欧几里得对应模型更优地表示基态波函数。实验中,尽管洛伦兹RNN参数量几乎仅为庞加莱GRU的三分之一,其在不同J2及(J2,J3)耦合情形下仍超越更复杂的庞加莱GRU与洛伦兹GRU,成为最优双曲NQS。结果表明,新提出的双曲洛伦兹与庞加莱递归型NQS在处理具有层次结构的量子多体系统时,具备更高效率与实用性。

原文摘要 · Abstract (English)

In this work, we construct new non-Euclidean neural quantum states (NQS) based on hyperbolic Lorentz recurrent architectures (RNN/GRU). These constructions, together with the Poincare RNN NQS also newly constructed here, extend the class of previously introduced non-Eucllidean NQS which consists only of Poincare hyperbolic GRU. Using the Heisenberg J1J2 and J1J2J3 models consisting of 100 spins in the Variational Monte Carlo (VMC) setting, we show that the four hyperbolic RNN/GRU NQS variants are always able to furnish better representations of the ground state wavefunctions of the quantum systems than their respective Euclidean counterparts with the same architecture. In our experiments, among the four hyperbolic NQS, Lorentz RNN stands out in particular because despite having almost three times fewer parameters, it is capable of surpassing the more complex Poincare GRU and Lorentz GRU to emerge as the best overall hyperbolic NQS ansatz on many instances involving different J2 and (J2,J3) couplings. Given the findings from this work showing that the four newly constructed hyperbolic RNN/GRU NQS ansatze are able to outperform the well-established Euclidean RNN/GRU NQS in Heisenberg spin models, we establish the utility and efficiency of the hyperbolic Lorentz RNN/GRU NQS as well as the Poincare RNN/GRU NQS for future variational studies of quantum many-body systems, especially those exhibiting a hierarchical structure in the form of the different degrees of nearest-neighbor interactions.

量子模拟神经量子态双曲几何递归网络

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