增强的表面跳跃方法用于采样罕见的非亚迪亚巴特事件
Yangqiu Liu1, Wei-Hai Fang1,2, Ganglong Cui1,2
1Key Laboratory of Theoretical and Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P.R. China.
Journal of chemical theory and computation
|November 27, 2025
概括
我们开发了一种新的非adiabatic事件采样方法,将最少的开关表面跳跃 (FSSH) 与增强的采样相结合. 这种方法有效地捕获罕见的过渡事件和衰变通道,加速模拟并降低计算成本.
科学领域:
- 计算化学计算化学
- 化学动力学 化学动力学
- 理论化学 理论化学
背景情况:
- 非反应性事件在化学反应中至关重要,但很难模拟.
- 像最少开关表面跳跃 (FSSH) 这样的标准方法与罕见事件和高能障碍作斗争.
研究的目的:
- 开发一种增强的非adiabatic事件采样方法.
- 为了提高模拟罕见的非adiabatic过渡和衰变通道的效率和准确性.
主要方法:
- 加强采样技术与最少开关表面跳跃 (FSSH) 方法的整合.
- 引入一个偏差函数来指导穿越能源障碍的轨迹.
- 基于债券长度差异和根-平均-平方偏差的两个偏差函数的开发.
主要成果:
- 新方法有效地采样罕见的非adiabatic过渡事件.
- 它成功地捕获了反应剂和产品之间的各种衰变通道.
- 偏差函数加快模拟并降低计算成本.
结论:
- 结合FSSH和增强采样方法,为研究复杂化学动态提供了强大的工具.
- 这种方法克服了模拟罕见事件的标准FSSH的局限性.
- 它提供了一种计算效率高的方法来探索各种反应途径.
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