triqs_tprf::split_into_dynamic_wk_and_constant_k

#include <triqs_tprf.hpp>

Synopsis

std::tuple<chi_wk_t, chi_k_t> split_into_dynamic_wk_and_constant_k (chi_wk_vt Gamma_pp)

Split Gamma in dynamic and constant part by tail fitting

Parameters

• Gamma_pp : particle-particle pairing vertex \(\Gamma(i\omega_n, \mathbf{k})\).

Returns

Tuple of Gamma_pp_dyn_wk, the dynamic part of Gamma, which converges to zero for \(\omega_n \rightarrow \infty\), and Gamma_pp_const_k, the part of Gamma that is constant in Matsubara frequency space \(\Gamma(\mathbf{k})\).