triqs_tprf::chi0r_from_chi0q

#include <triqs_tprf.hpp>

Synopsis

chi_wnr_t chi0r_from_chi0q (chi_wnk_cvt chi_wnk)

Fourier transform of the generalized susceptibility \(\chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{q})\) in momentum-space to \(\chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{r})\) in real-space.

Computes

\[\chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{r}) = \mathcal{F}_{\mathbf{q} \rightarrow \mathbf{r}} \left\{ \chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{q}) \right\}\]

Parameters

• chi_wnk Generalized susceptibility \(\chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{q})\) in one bosonic and one fermionic Matsuabara frequency and momentum space.

Returns

Generalized susceptibility \(\chi^{(0)}_{\bar{a}b\bar{c}d}(\omega, \nu, \mathbf{r})\) in one bosonic and one fermionic Matsuabara frequency and real space.