gftool.pole_gf_ret_t
- gftool.pole_gf_ret_t(tt, poles, weights)
Retarded time Green’s function given by a finite number of poles.
- Parameters:
- tt(…) float array_like
Green’s function is evaluated at times tt, for tt<0 it is 0.
- poles, weights(…, N) float array_like or float
Position and weight of the poles.
- Returns:
- (…) float np.ndarray
Retarded time Green’s function.
See also
pole_gf_z
Corresponding commutator Green’s function.