核和电子轨道在核Hartree产品表示中的高效和强大的优化
Mathew Chow1,2, Eno Paenurk2, Sharon Hammes-Schiffer1,2
1Department of Chemistry, Yale University, New Haven, Connecticut 06520, USA.
The Journal of chemical physics
|February 17, 2026
概括
核电子轨道 (NEO) 方法通过同样对待原子核和电子来增强量子力学计算. 使用核Hartree产品表示可以提高NEO自一致场 (SCF) 优化的效率和稳定性.
科学领域:
- 量子化学 是一个量子化学.
- 计算化学计算化学
- 理论化学 理论化学
背景情况:
- 核电子轨道 (NEO) 方法整合了超出波恩-奥本海默近似的核量子效应.
- 现有的NEO方法,包括密度函数理论和波函数方法,面临着自我一致场 (SCF) 趋同的挑战.
- 困难的SCF收限制了某些NEO计算的应用.
研究的目的:
- 为了提高NEO自相一致场 (SCF) 优化程序的效率和稳定性.
- 调查不同核轨道表示对NEO-SCF融合的影响.
- 为具有挑战性的系统实现电子和核轨道的同时优化.
主要方法:
- 在NEO框架内实施核Hartree产品代表.
- 核哈特树产物表示与核斯莱特决定子表示的比较.
- 应用扩展的几何直接最小化和信任半径增强的黑斯算法用于同时轨道优化.
主要成果:
- 与核斯莱特决定子表示相比,核Hartree产品表示显著提高了NEO-SCF优化的效率和稳定性.
- 对于含有多个量子质子的92个测试分子,观察到更快,更强大的融合.
- 由于在Hartree产品表现中排除了核自我库伦和自我交换术语,因此改善了趋同.
- 电子和核轨道的同时优化被证明是复杂的系统,如核酸缩酶和UO2 (OH) 4.
结论:
- 核Hartree产品表示为NEO计算提供了更有效,更稳定的SCF优化.
- 先进的优化算法促进了同时进行电子和核轨道优化,扩大了NEO应用的范围.
- 这项工作为在各种化学系统中进行更强大,更有效的NEO计算铺平了道路.
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