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Hot-Ham: an Accurate and Efficient E(3)-Equivariant Machine-Learning Electronic Structures Calculation Framework

delete2026-01-01
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PRE
AI
Z
Zhixin Liang
Y
Yunlong Wang
C
Chi Ding
J
Junjie Wang
H
Hui‐Tian Wang
D
Dingyu Xing
孙
孙建 (Jian Sun)
DOI:10.1088/0256-307X/43/2/020704delete
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摘要

摘要

En 中文
机器学习与从头算方法的结合因其能够解决精度-效率两难问题并促进大规模系统计算而受到广泛关注。最近,显式纳入对称性约束的等变消息传递神经网络(MPNNs)在预测原子间势能和密度泛函理论(DFT)哈密顿量方面显示出潜力。然而,用于表示节点和边信息的高阶张量通过Clebsch–Gordan张量积耦合,导致计算复杂度急剧增加,严重阻碍了等变MPNNs的性能。在此,我们开发了高阶张量机器学习哈密顿量(Hot-Ham),一种E(3)等变MPNN框架,该框架结合了两种先进技术:局部坐标变换和Gaunt张量积,以高效地建模DFT哈密顿量。这两项创新显著将张量积的复杂度从O(L^6)降低至O(L^3)或O(L^2 log2L)(对于最大张量阶数L),并提升了MPNNs的性能。在多个公开数据集上的基准测试证明了其在参数相对较少的情况下达到的顶尖精度,而在多层扭转莫尔系统、异质结构和同素异形体中的应用则展示了其泛化能力和高效率。我们的Hot-Ham方法为开发高效等变神经网络提供了新视角,并将成为研究大规模材料系统电子性质的有前景的方法。

期刊

Chinese Physics Letters 封面图
Chinese Physics Letters
IF:
4.2
论文数:
9.1K
被引数:
7.7K

机构

N
Nanjing University
学者数:
7.0K
论文数: 2.6K
被引数: 8.1W
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