Figure 2

Population second moment. Average over 500 disorder realizations of the relative second moment in the population distribution \(\Delta n/n_{\mathrm{av}}\) for the ground state of the Anderson Hamiltonian, as a function of the system size N and for different disorder intensities (from top to bottom \(\Delta/J=2,5,10,15,20\)) showing the convergence of the dispersion of the population as the number of sites is increased.