The calculation of the Green's function in getGMultiBand() for negative frequencies makes the assumption that the multi band Green's function in real space and imaginary time is real. This is the case when the multi-orbital Hamiltonian in real space is real, but fails when it has complex terms.
The calculation of the Green's function in getGMultiBand() for negative frequencies makes the assumption that the multi band Green's function in real space and imaginary time is real. This is the case when the multi-orbital Hamiltonian in real space is real, but fails when it has complex terms.