Dresden 2026 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 70: Correlated Electrons: Method Development III
TT 70.5: Talk
Thursday, March 12, 2026, 10:30–10:45, HSZ/0101
A new take on an old method for approximating quantum many-body ground states — •Joe Crossley1, Bruno Bertini2, Arash Jafarizadeh3, Molly Gibbins1, and Adam Gammon-Smith1 — 1University of Nottingham, United Kingdom — 2University of Birmingham, United Kingdom — 3None
For decades, quantum chemists have been using so-called ``post Hartree-Fock" methods to study systems of many interacting electrons moving on a fixed structural background. This set-up closely resembles many important problems from the world of condensed matter physics. However, despite the conceptual overlap, these methods have seen little adoption within the physics community. In this talk, I will discuss our recent progress on exploring the potential of post Hartree-Fock techniques applied to condensed matter problems---particularly in regimes where standard tools such as tensor networks and quantum Monte Carlo are known to struggle.
Keywords: Hartree-Fock; Correlation; Fermion; Ground-state; Variational