Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session W59: Electronic Structure Methods I
3:00 PM–5:36 PM,
Thursday, March 9, 2023
Room: Room 301
Sponsoring
Unit:
DCOMP
Chair: Annabella Selloni, Princeton University
Abstract: W59.00013 : Photoemission spectroscopy from the three-body Green's function*
5:24 PM–5:36 PM
Presenter:
Arjan A Berger
(Univ Paul Sabatier)
Authors:
Arjan A Berger
(Univ Paul Sabatier)
gabriele riva
(Université Paul Sabatier)
Pina Romaniello
(Univ Paul Sabatier)
Our method uses the three-body Green's function as a key quantity instead of the one-body Green's function as is traditionally done.
We show that, contrary to the one-body Green's function, satellites are already present in the corresponding non-interacting Green's function.
Therefore, quasiparticles and satellites are treated on an equal footing in our approach.
Moreover, we propose a simple static three-body self-energy that can be applied in practical calculations on real systems since it requires standard numerical tools readily available in all computer codes.
*We thank the French Agence Nationale de la Recherche (ANR) for financial support (Grant Agreements No. ANR-18-CE30- 0025 and ANR-19-CE30-0011).
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