Fig. 3: Evolution of mean positions and uncertainties in a 2D Hatano–Nelson lattice.
From: Self-trapping and skin solitons in two-dimensional non-Hermitian lattices
The non-Hermiticity parameter is h = 0.2, and the initial condition is \({\psi }_{{n}_{x},{n}_{y}}(z=0)=A\,{\delta }_{{n}_{x},13}{\delta }_{{n}_{y},13}\). a Mean positions 〈nx〉 and 〈ny〉. b Position uncertainties Δnx and Δny for the linear case (gray line) and for nonlinear cases with excitation amplitudes A = 1 (red), A = 4 (blue), and A = 6 (green).
