Figure 9From: Few-qubit quantum-classical simulation of strongly correlated lattice fermions Quasiparticle weight as a function of interaction U . Self-consistent quasiparticle weight \(\mathcal{Z}\) obtained from the XY method with 24 (blue diamonds), 36 (red circles), and 48 Trotter steps (yellow squares), compared to the exact solution of the two-site SIAM (purple stars). Inset: Same plot zoomed into the region around the critical interaction, \(U_{c}=6t^{*}\).Back to article page