gftool.matrix.construct_gf

gftool.matrix.construct_gf(rv, diag_inv, rv_inv)

Construct Green’s function from decomposition of its inverse.

\[G^{−1} = P h P^{-1} ⇒ G = P h^{-1} P^{-1}\]

Parameters:

rv_inv : (N, N) complex np.ndarray

The inverse of the matrix of right eigenvectors (\(P^{-1}\))

diag_inv : (N) array_like

The eigenvalues (\(h\))

rv : (N, N) complex np.ndarray

The matrix of right eigenvectors (\(P\))

Returns:

gf : (N, N) complex np.ndarray

The Green’s function