Abstract
The direct adc procedure presented in Chap. 10 for the \(\varvec{G}^{\pm }(\omega )\) parts of the electron propagator can essentially be transferred to the polarization propagator, where it suffices to deal with \(\varvec{\Pi }^+(\omega )\) due to the redundancy of the two parts. This will be demonstrated in the following. Moreover, in analogy to Chap. 11, the intermediate-state representation (isr), here based on the correlated excited N-electron states, will be established and discussed.
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References
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Schirmer, J. (2018). ADC and ISR Approaches to the Polarization Propagator. In: Many-Body Methods for Atoms, Molecules and Clusters. Lecture Notes in Chemistry, vol 94. Springer, Cham. https://doi.org/10.1007/978-3-319-93602-4_14
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DOI: https://doi.org/10.1007/978-3-319-93602-4_14
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