2 papers
cond-mat.str-el2026
Dual-space cluster-diagrammatic approach to nonlocal electronic correlations
Félix Fossati, Evgeny A. Stepanov
In this work, we extend the dual triply irreducible local expansion (D-TRILEX) approach for correlated electronic systems by introducing a cluster reference system for the diagramm…
cond-mat.str-el2025
Diagrammatics in the Dual Space, or There and Back Again
Evgeny A. Stepanov
Accurately describing many-body effects in multi-orbital systems remains a major challenge in theoretical condensed matter physics. At present, there is a significant methodologica…