2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/25989We analyze two pairs of doublet states for the two Anderson impurity problem. We found that for short interimpurity distances they have a lower energy than the ferro triplet and the antiferro singlet. For medium to long distances between the impurities, the doublets also have a lower energy than the two decoupled Kondo-singlet state for most of the range of interest. The mechanism behind their energy gain is an coherence enhanced Kondo-like interaction.4 pages, 4 figureaStrongly Correlated ElectronsMesoscale and Nanoscale Physicstext