chi_tr_from_chi_wr

Synopsis:

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

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

Parameters

• chi_tr: Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\tau, \mathbf{r})\)

  in imaginary time and real space.

Return value

Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r})\)

in Matsubara frequency and real-space.

Documentation

Computes

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