17 Jun
2020
17 Jun
'20
2:52 p.m.
Dear Abbout, Thank you for your helpful reply it clears up a lot. I tried to obtain H12 as you mentioned: H12=syst.hamiltonian_submatrix(to_sites=Sites1, from_sites=Sites2) But it gives me the error that "an integer is required". Although that is not a major issue I could try to construct H12 manually. Thanks a lot for your help.