对结合集群理论的视角. 在量子化学中向简单的进化
1Quantum Theory Project, Department of Chemistry, University of Florida, P. O. Box 117200, Gainesville, Florida, USA. bartlett@qtp.ufl.edu.
Physical chemistry chemical physics : PCCP
|February 23, 2024
概括
合集群理论为解决量子化学中的电子相关性提供了一个强大的框架,使精确的*ab initio*计算成为可能. 这种观点突出了其概念上的进步和向预测理论化学的简单性的演变.
科学领域:
- 量子化学 是一个量子化学.
- 理论化学 理论化学
- 计算化学的计算化学
背景情况:
- 60多年来,电子相关性一直是量子化学的一个核心挑战.
- 传统的方法很难准确地解释电子相关性,限制了预测准确度.
- 结合集群 (CC) 理论已经成为领先的计算方法.
研究的目的:
- 突出结合集群 (CC) 理论的概念进步.
- 强调CC理论及其扩展中的"向简单发展".
- 要强调CC理论对于在量子化学中实现预测质量的重要性.
主要方法:
- 作为一个多体方法,对联集群 (CC) 理论的审查.
- 讨论其用于解决施罗丁格和迪拉克方程的应用.
- 考虑基础集合的收和更高的集群激发.
主要成果:
- CC理论有效地解决了电子相关性,使得*ab initio*计算非常准确.
- 它为各种化学性质提供预测性质结果.
- 该理论为量子化学提供了一个概念上新的,多体的基础.
结论:
- 结合集群理论通过为电子相关性提供了强大的框架,彻底改变了量子化学.
- 它的数值性能和概念简单性使它成为预测理论化学的无价之宝.
- 运动方程合集群 (EOM-CC) 扩展进一步增强了它的功能.
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