Hi All, Short question regarding the definition of the hamiltonian in an SNS junction. I have the following hamiltonian: ### S syst[(lat(x, 0) for x in range(-S, 0))] = (2 * t - mu) * tau_z + Delta * tau_x #### N syst[(lat(x, 0) for x in range(0, N))] = (2 * t - mu + barrier) * tau_z ### S syst[(lat(x, 0) for x in range(N, N+S))] = (2 * t - mu) * tau_z + Delta * tau_x with N=10 and S=20. However the wavefunction I get in return with the boundstate algorithm (as this one, for example, https://gitlab.kwant-project.org/kwant/boundstate) has twice the number of sites in each region (N=20 and S =40). Does anyone have any idea why it has twice the number of points and if I can trust the solution in these points?
Here is an example that I've sent in the previous email. [image: image.png] Best, Denise
