Approximate Atomic Green Functions

In atomic and many-particle physics, Green functions often occur as <i>propagators</i> to formally represent the (integration over the) complete spectrum of the underlying Hamiltonian. However, while these functions are very crucial to describing many second- and higher-order perturbatio...

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Bibliographic Details
Main Authors: Stephan Fritzsche, Andrey Surzhykov
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Molecules
Subjects:
ion
Online Access:https://www.mdpi.com/1420-3049/26/9/2660