2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/217013Double quantum dots offer unique possibilities for the study of many-body correlations. A system containing one Kondo dot and one effectively noninteracting dot maps onto a single-impurity Anderson model with a structured (nonconstant) density of states. Numerical renormalization-group calculations show that while band filtering through the resonant dot splits the Kondo resonance, the singlet ground state is robust. The system can also be continuously tuned to create a pseudogapped density of states and access a quantum critical point separating Kondo and non-Kondo phases.4 pages, 4 figures; Accepted for publication in Physical Review LettersMesoscale and Nanoscale PhysicsStrongly Correlated Electronstext