微扰适应微扰理论
Perturbation-Adapted Perturbation Theory
摘要：
本文介绍了一种新的定义瑞利-薛定谔微扰理论最佳零阶哈密顿量的一般方法。而不是采取直接从模型问题的运营商，它是一个最好的适合在任何所需的功能形式的确切的哈密顿量。当应用到多体微扰理论的电子，强烈改善收敛的情况下，观察到传统的福克哈密顿导致发散或缓慢收敛。
英文摘要：
A new general approach is introduced for definining an optimum zero-order Hamiltonian for Rayleigh-Schrödinger perturbation theory. Instead of taking the operator directly from a model problem, it is constructed to be a best fit to the exact Hamiltonian within any desired functional form. When applied to many-body perturbation theory for electrons, strongly improved convergence is observed in cases where the conventional Fock hamiltonian leads to divergence or slow convergence.
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。
