From the 1 of 6 linked papers with an AI index.
6 papers
Algebraic Diagrammatic Construction of the Multichannel Dyson Equation
Thibault Demartini, J. Arjan Berger, Guillaume Blanchon +4
The paper connects the multichannel Dyson equation to the algebraic diagrammatic construction, showing it lies between ADC(2) and ADC(3) approximations, and demonstrates improved q…
Core and valence photoemission spectra of atoms and molecules from a multichannel Dyson equation
Stefano Paggi, J. Arjan Berger, Pina Romaniello
We recently presented multichannel Dyson equations for the \textit{ab initio} simulation of various spectroscopies. In particular, we introduced a multichannel Dyson equation for t…
The multichannel Dyson equation for double ionisation spectroscopies
Pierre Sellié, J. Arjan Berger, Pina Romaniello
Several photoemission spectroscopies and, in particular, Auger spectroscopy, involve double-ionization processes. For the numerical simulation of these spectroscopies it is conveni…
Direct and inverse photoemission spectra from the screened multichannel Dyson equation
Pina Romaniello, J. Arjan Berger
We present the screened multichannel Dyson equation for the simulation of both direct and inverse photoemission spectra from first principles. The screened multichannel Dyson equat…
Ground and excited-state properties of the extended Hubbard dimer from the multichannel Dyson equation
Stefano Paggi, J. Arjan Berger, Pina Romaniello
We have recently presented the multichannel Dyson equation as an alternative to the standard single-channel Dyson equation. While the latter involves a single many-body Green's fun…
Multichannel Dyson equations for even- and odd-order Green's functions: application to double excitations
Gabriele Riva, Théodore Fischer, Stefano Paggi +2
We extend the concept of the multichannel Dyson equation that we have recently derived to model photoemission spectra by coupling the one- and the three-body Green's functions, to…