Analytic gradients for compressed multistate pair-density functional theory

Analytic gradients for compressed multistate pair-density functional theory
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压缩多态对密度泛函理论的解析梯度

DOI:
10.1080/00268976.2022.2110534
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发表时间:
2022
期刊:
影响因子:
1.7
通讯作者:
Truhlar, Donald G.
Truhlar, Donald G.
中科院分区:
化学4区
文献类型:
--
作者:
Bao, Jie J.;Hermes, Matthew R.;Scott, Thais R.;Sand, Andrew M.;Lindh, Roland;Gagliardi, Laura;Truhlar, Donald G.

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光化学反应通常涉及由于近简并而紧密耦合的状态,例如通过接近圆锥形交叉点。因此,一个多状态的方法是用来准确地描述这些状态,例如,普通的微扰理论取代quasidegenerate微扰理论。多组态对密度泛函理论(MC-PDFT)提供了一种有效的方法来近似强关联系统的全动力学相关能,最近我们提出了压缩多态对密度泛函理论(CMS-PDFT)来处理紧密耦合态。在本文中,我们报告了在OpenMolcas和PySCF中CMS-PDFT分析梯度的实现,并通过将该方法应用于甲醛和苯酚的激发态来说明这些梯度的使用。
Photochemical reactions often involve states that are closely coupled due to near degeneracies, for example by proximity to conical intersections. Therefore, a multistate method is used to accurately describe these states; for example, ordinary perturbation theory is replaced by quasidegenerate perturbation theory. Multiconfiguration pair-density functional theory (MC-PDFT) provides an efficient way to approximate the full dynamical correlation energy of strongly correlated systems, and we recently proposed compressed multistate pair-density functional theory (CMS-PDFT) to treat closely coupled states. In the present paper, we report the implementation of analytic gradients for CMS-PDFT in bothOpenMolcasandPySCF, and we illustrate the use of these gradients by applying the method to the excited states of formaldehyde and phenol.
DOI: 10.1021/acs.jpca.1c08524
发表时间: 2021
期刊: The journal of physical chemistry. A
影响因子: --
作者:
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DOI: 10.1021/acs.jctc.0c00908
发表时间: 2020-12-08
影响因子: 5.5
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状态平均多配置对密度泛函理论的解析梯度。
DOI: --
发表时间: 2020
影响因子: 4.4
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