Function QCM::band_Green_function(const complex<double>, const vector3D<double>&, bool, int)

Function Documentation

matrix<complex<double>> QCM::band_Green_function(const complex<double> w, const vector3D<double> &k, bool spin_down, int label)

returns the band Green function at a given frequency and wavevector

Computes the periodized Green function in the band basis at a frequency and wavevector.

Parameters:

spin_down – true if the spin-down sector is covered (mixing = 4)