Lattice averaged Green's function from the covariance matrix

Using the covariance matrix I computed the average value of the following components of the green's function for each reciprocal lattice vector (k): Grr, Gnn, Grn.
NOTE: (i) 'r' is along 'k' while 'n' is normal to 'r'.
(ii) name of the module: computeGreensFunction.py (in ..../disordered/2d-22/ on navier).

Plots of Grr, Gnn, Grn (respectively) follow:




NOTE: this program hasn't been thoroughly debugged.