Author(s): Franco T. Lisandrini, Edmond Orignac, Roberta Citro, Ameneh Sheikhan, and Corinna Kollath We study the effect of density-assisted hopping on different dimerized lattice geometries, such as bilayers and ladder structures. We show analytically that the density-assisted hopping induces an attractive interaction in the lower (bonding) band of the dimer structure and a repulsion in the upper … [Phys. Rev. Lett. 137, 126004] Published Tue Sep 15, 2026