triqs.gfs.gf_fnt.gf_fnt_fit_and_density.replace_by_tail

triqs.gfs.gf_fnt.gf_fnt_fit_and_density.replace_by_tail()

Dispatched C++ function(s).

[1] (g: Gf[MeshImFreq, 2], tail: ndarray[complex, 3], n_min: int)
  -> void

Overwrite the high-frequency tail of a Matsubara Green’s function.

For every Matsubara index with \(|n| \geq n_{\min}\), the value of the Green’s function is replaced by the tail expansion evaluated at that frequency. Values at lower indices are left unchanged.

Parameters:

gGf[MeshImFreq, 2]

The Matsubara Green’s function to modify in place.

tailndarray[complex, 3]

The high-frequency moments used to build the tail.

n_minint

Minimum absolute Matsubara index from which to apply the tail.