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
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.
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