Authors: Lukas Homeier, Hannah Lange, Eugene Demler, Annabelle Bohrdt, Fabian Grusdt
Published: 2025-01-03
DOI: 10.1038/s41467-024-55549-4
Source: Full article
AbstractResonant interactions associated with the emergence of a bound state constitute one of the cornerstones of modern many-body physics. Here we present a Feshbach perspective on the origin of strong pairing in Fermi-Hubbard type models. We perform a theoretical analysis of interactions between spin-polaron charge carriers in doped Mott insulators, modeled by a near-resonant two-channel scattering problem, and report evidence for Feshbach-type interactions in the $${d}_{{x}^{2}-{y}^{2}}$$