arXiv:2605.16020cs.LGcond-mat.dis-nn2026-05被引 1

用物理先验提升自回归网络采样效率,加速复杂自旋模型模拟。

Variational Autoregressive Networks with probability priors

论文配图:Variational Autoregressive Networks with probability priors
图 1 · 摘自论文原文
  • 引入物理先验概率作为训练起点,指导模型学习自旋相互作用。
  • 在伊辛模型和爱德华-安德森自旋玻璃上,训练更稳定且可模拟更大系统。
  • 适合需要高效模拟统计物理系统的研究人员参考。

蒙特卡洛方法在多个科学领域至关重要,但其效率常因临界慢化现象而受阻——即在相变附近相关时间急剧增加。尽管基于神经网络的采样器被提出以缓解此问题,但其训练仍面临巨大挑战,部分原因在于原始机器学习架构过于通用,忽略底层物理对称性,迫使网络从零开始重新学习。本文表明,将物理先验融入模型能显著提升性能。在现有结合自旋-自旋相互作用的方法基础上,我们提出一种框架,以先验概率分布为训练起点。对伊辛模型及爱德华-安德森自旋玻璃模型的实验结果表明,相较于传统‘空白画布’模型,采用物理信息先验可减轻训练负担,并实现更大尺度离散自旋模型的模拟。

原文摘要 · Abstract (English)

Monte Carlo methods are essential across diverse scientific fields, yet their efficiency is frequently hampered by critical slowing down-a sharp increase in autocorrelation times near phase transitions. Although deep learning approaches, such as neural-network-based samplers, have been proposed to alleviate this issue, they face another serious problem: the difficulty of training the models. This difficulty partially stems from the overly general nature of original machine-learning architectures, which often ignore underlying physical symmetries and force networks to relearn them from scratch. In this paper, we demonstrate that incorporating physical priors into the model significantly enhances performance. Building upon existing strategies that integrate spin-spin interactions, we propose a framework that utilizes a prior probability distribution as a starting point for training. Our results for the Ising model, as well as for the Edwards-Anderson spin glass model, suggest that moving away from `blank slate' models in favor of physics-informed priors reduces the training burden and facilitates the simulation of larger system sizes in discrete spin models.

自回归网络物理先验蒙特卡洛采样自旋玻璃

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