Exploring Harmony between Theory and Computation - Toward a unified electronic structure theory

摘要

The physical aspect of a general perturbation theory is explored. Its role asa physical principle for understanding the interaction among matter withdifferent levels of hierarchy is appreciated. It is shown that the genericperturbation theory can not only be used for understanding various electronicphenomena including the nature of chemical bonds but also serve as a$\it{unified}$ theme for developing $\it{general}$ electronic structuretheories and calculation schemes. In particular, a $\it{standard}$ electroncorrelation approach is suggested and established according to this law.