Derivative couplings and analytic gradients for diabatic states, with an implementation for Boys-localized configuration-interaction singles.
Derivative couplings and analytic gradients for diabatic states, with an implementation for Boys-localized configuration-interaction singles.
复制标题
非绝热状态的导数耦合和解析梯度,以及男孩局部配置交互单例的实现。
DOI:
10.1063/1.4820485
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Joseph E. Subotnik
中科院分区:
文献类型:
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作者:
S. Fatehi;Ethan C Alguire;Joseph E. Subotnik
We demonstrate that Boys-localized diabatic states do indeed exhibit small derivative couplings, as is required of quasidiabatic states. In doing so, we present a general formalism for calculating derivative couplings and analytic gradients for diabatic states. We then develop additional equations specific to the case of Boys-localized configuration-interaction singles (CIS)--in particular, the analytic gradient of the CIS dipole matrix--and we validate our implementation against finite-difference results. In a forthcoming paper, we will publish additional algorithmic and computational details and apply our method to the Closs energy-transfer systems as a further test of the validity of Boys-localized diabatic states.