Fig. 1From: Coupled Cluster Downfolding Theory: towards universal many-body algorithms for dimensionality reduction of composite quantum systems in chemistry and materials scienceA schematic representation of the quantum flow algorithm. In this algorithm, the computational problem for a large space is translated into the computational flow involving coupled eigenvalue problems involving Hermitian \(H^{\text {eff}}(\mathfrak {h}_{i}) \; (i=1,\ldots,M)\) (see text for more details)Back to article page