triqs_ctseg::solver_core::nn_iwΒΆ
#include <triqs_ctseg/solver_core.hpp>
Synopsis
block_gf_view<triqs::gfs::imfreq> nn_iw ()
Density-density correlation function \(\mathrm{FT}\left[\langle n^\sigma_{a}(\tau) n^{\sigma'}_{b}(0)\rangle\right]\) (see [[measure_nnw]])