关于圆交点周围的拓阶段与塔姆-丹科夫线性响应时间依赖密度函数理论
Jack T Taylor1, David J Tozer1, Basile F E Curchod2
1Department of Chemistry, Durham University, South Road, Durham DH1 3LE, United Kingdom.
The journal of physical chemistry. A
|June 26, 2024
概括
阿迪亚巴特式近似线性响应时间依赖密度函数理论 (AA LR-TDDFT) 可以捕捉形交叉点的拓相. 即使使用不正确的非adiabatic合向量或维度,这种情况也是如此.
科学领域:
- 计算化学的计算化学
- 量子化学 是一个量子化学.
- 理论化学 理论化学
背景情况:
- 圆交点 (CIs) 是分子系统中的关键特征,代表电子潜在能量表面之间的退化.
- 靠近CI的区域经常在非adiabatic动态模拟中采样,需要精确的电子结构方法.
- 之前的研究研究了CI的拓和地形,使用了亚迪亚巴特式近似线性响应时间依赖密度函数理论 (AA LR-TDDFT).
研究的目的:
- 评估AA LR-TDDFT能够复制在激发到激发状态的圆交叉点周围积累的拓相的能力.
- 评估AA LR-TDDFT是否可以从地面到激发状态交叉环生成拓相,尽管维度不正确.
主要方法:
- 使用AA LR-TDDFT,研究了质子形式胺和pyrazine的拓相积.
- 检查了兴奋到兴奋状态的形交叉点,考虑使用非二次反应非adiabatic合矢量.
- 在质子化甲中分析了地面与激发状态交叉环,用于拓相位生成.
主要成果:
- AA LR-TDDFT正确地复制了围绕着激发到激发状态的形交叉点的拓相,即使没有适当的非adiabatic合向量.
- 该方法从错误的维度地与激发状态交叉环中生成一个拓阶段在质子化甲中.
- 这些发现凸显了AA LR-TDDFT在描述圆交叉点的重点拓特征方面的稳定性.
结论:
- AA LR-TDDFT在捕捉形交叉点的基本拓性质方面表现出显著的能力.
- 该方法在复制拓阶段方面的性能表明它在非adiabatic动态模拟中具有实用性.
- 对AA LR-TDDFT在各种圆交叉场景中的局限性和适用性进行进一步的研究是有必要的.
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