Abstract
We investigate the localization of low-energy single quasi-particle states in the 7/9-hybrid nanoribbon system in the presence of strong interactions and within a finite volume. We consider two scenarios, the first being the Hubbard model at half-filling and perform quantum Monte Carlo simulations for a range U that includes the strongly correlated regime. In the second case we add a nearest-neighbor superconducting pairing Δ and take the symmetric line limit, where Δ is equal in magnitude to the hopping parameter t. In this limit the quasi-particle spectrum and wavefunctions can be directly solved for general onsite interaction U. In both cases we extract the site-dependent quasi-particle wavefunction densities and demonstrate that localization persists in these non-perturbative regimes under particular scenarios.