triqs.atom_diag.atom_diag.atomic_g_iw

triqs.atom_diag.atom_diag.atomic_g_iw()

Dispatched C++ function(s).

[1] (atom: AtomDiagReal,
     beta: float,
     gf_struct: [tuple[str, int]],
     n_iw: int,
     excluded_states: [tuple[int, int]] = <unprintable>)
  -> BlockGf[MeshImFreq, 2]

[2] (atom: AtomDiagComplex,
     beta: float,
     gf_struct: [tuple[str, int]],
     n_iw: int,
     excluded_states: [tuple[int, int]] = <unprintable>)
  -> BlockGf[MeshImFreq, 2]

Build the atomic Matsubara Green’s function directly from a solved diagonalization problem.

Internally builds the Lehmann representation and evaluates

\[G(i\omega) = \sum_p \frac{r_p}{i\omega - p}\]

on the requested mesh.

Parameters:

atomAtomDiagReal, AtomDiagComplex

Solved diagonalization problem.

betafloat

Inverse temperature \(\beta > 0\).

gf_struct[tuple[str, int]]

Block structure of the Green’s function: block name -> list of inner indices.

n_iwint

Number of positive Matsubara frequencies.

excluded_states[tuple[int, int]]

Eigenstates to exclude from the Lehmann sum, as \((B, i)\) pairs.

Returns:

BlockGf[MeshImFreq, 2]

Atomic Green’s function \(G_{ab}(i\omega)\).