triqs_tprf::chi_tr_from_chi_wr

#include <triqs_tprf.hpp>

Synopsis

chi_tr_t chi_tr_from_chi_wr (chi_wr_cvt chi_wr, int ntau = -1)

Fourier transform from \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r})\) to \(\chi_{\bar{a}b\bar{c}d}(\tau, \mathbf{r})\)

Computes

\[\chi_{\bar{a}b\bar{c}d}(\tau, \mathbf{r}) = \mathcal{F}_{\omega \rightarrow \tau} \left\{ \chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r}) = \right\}\]

Parameters

chi_tr Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\tau, \mathbf{r})\)
in imaginary time and real space.

Returns

Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r})\): in Matsubara frequency and real-space.