Figure 8From: Few-qubit quantum-classical simulation of strongly correlated lattice fermions Spectral functions in the metallic and insulating phases. Spectral functions obtained with the XY method with 24 Trotter steps (blue line) and exact solution of the two-site SIAM (red dashed line). The parameters of the two-site SIAM are iterated to self-consistency with (a) \(U=5t^{*}\) and (b) \(U=8t^{*}\).Back to article page