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arXiv 2310.03096physics.chem-ph
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用于N体微扰理论的灵活试探波函数方法

Flexible Ansatz for N-body Perturbation Theory

Ramón Alain Miranda-Quintana, Taewon D. Kim, Rugwed A. Lokhande, M. Richer, Gabriela Sánchez-Díaz, Pratiksha B. Gaikwad, Paul W. Ayers

AI总结:

本研究提出基于FANCI的N体微扰理论新框架FANPT,推导了任意阶递推表达式,验证其在静态关联主导组态、高度非线性波函数等多种条件下均表现良好,可辅助任意波函数的薛定谔方程投影求解。

摘要:

我们提出了一种新的微扰理论框架,可用于辅助任意波函数的薛定谔方程投影求解。这种名为“用于N体微扰理论的灵活试探波函数方法(Flexible Ansatz for N-body Perturbation Theory, FANPT)”的框架,基于我们此前提出的“用于N体组态相互作用的灵活试探波函数方法(Flexible Ansatz for N-body Configuration Interaction, FANCI)”构建。我们推导了包含微扰层级任意阶的FANPT递推表达式。实验表明,FANPT方程在多种条件下均表现良好,涵盖以静态关联为主的组态以及高度非线性波函数场景。

英文摘要:

We propose a new Perturbation Theory framework that can be used to help with the projective solution of the Schrödinger equation for arbitrary wavefunctions. This Flexible Ansatz for N-body Perturbation Theory (FANPT) is based on our previously proposed Flexible Ansatz for N-body Configuration Interaction (FANCI). We derive recursive FANPT expressions including arbitrary orders in the perturbation hierarchy. We show that the FANPT equations are well-behaved across a wide range of conditions, including static correlation-dominated configurations and highly non-linear wavefunctions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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