“…In contrast to simpler models, however, the three-impurity model allows to study crossovers between various non-trivial fixed points. Spurred on by a number of experimental achievements 42,43,44,45,46,47,48,49 , the interest in the transport properties of three-impurity models recently intensified 50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66 . We thus also study the conductance through a system of three coupled quantum dots described by a related model featuring three Anderson-model-like impurity electron levels interconnected by tunneling coupling and connected to conduction bands by hybridization.…”