gftool.siam.hybrid_z

gftool.siam.hybrid_z(z, e_bath, hopping_sqr)

Hybridization function of the impurity.

Parameters

z(…) complex np.ndarray

Complex frequency variable.

e_bath(…, Nb) float np.ndarray

On-site energy of the bath sites.

hopping_sqr(…, Nb) complex np.ndarray

Absolute square of hopping matrix element between impurity and the bath sites.

Returns

hybrid_z(…) complex np.ndarray

Hybridization function of the impurity site.