gftools.fourier

Fourier transformations of Green’s functions.

Glossary

dft

<discrete Foruier transform>

ft

<Fourier transformation> In contrast to dft, this is used for Fourier integration of continous variables without discretization.

iv

Bosonic Matsubara frequncies

iw

<iω_n> Fermionic Matusbara frequncies

tau

Imaginary time points

API

Functions

iw2tau_dft(gf_iw, beta)	Discrete Fourier transform of the Hermitian Green’s function gf_iw.
iw2tau_dft_soft(gf_iw, beta)	Discrete Fourier transform of the Hermitian Green’s function gf_iw.
tau2iw_dft(gf_tau, beta)	Discrete Fourier transform of the real Green’s function gf_tau.
tau2iw_ft_lin(gf_tau, beta)	Fourier integration of the real Green’s function gf_tau.