triqs::atom_diag::atomic_g_w

#include <triqs/atom_diag/gf.hpp>

Synopsis

1. template<bool Complex>

   block_gf<triqs::mesh::refreq> atomic_g_w (gf_lehmann_t<Complex> const & lehmann,

   gf_struct_t const & gf_struct,

   mesh::refreq const & mesh,

   double broadening = 0)
2. template<bool Complex>

   block_gf<triqs::mesh::refreq> atomic_g_w (atom_diag<Complex> const & atom,

   double beta,

   gf_struct_t const & gf_struct,

   std::pair<double, double> const & energy_window,

   int n_w,

   double broadening = 0,

   excluded_states_t const & excluded_states = {})

Documentation

1) The atomic retarded Green’s function, constructed from precomputed Lehmann representation

2) The atomic retarded Green’s function, possibly with excluded states (none by default)

Template parameters

• Complex Do we have a diagonalization problem with a complex-valued Hamiltonian?

Parameters

• lehmann Lehmann representation.
• gf_struct Block structure of the Green’s function, block name -> list of inner indices.
• mesh Real frequency mesh used in construction.
• broadening Lorentian broadening of the spectrum (imaginary frequency shift).
• atom Solved diagonalization problem.
• beta Inverse temperature.
• energy_window Energy window \((\omega_{min}, \omega_{max})\).
• n_w Number of frequency points.
• excluded_states Excluded eigenstates as pairs (subspace index, inner index).

Returns

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