K-polystability of Fano 4-folds with large Lefschetz defect

Eleonora A. Romano, Saverio A. Secci

In this paper, we investigate K-polystability on smooth complex Fano 4-folds with Lefschetz defect at least 2, focusing on the case of Lefschetz defect 3 and on Casagrande-Druel Fa…