triqs_modest.post_processing

Methods to compute spectral functions.

The momentum-resolved spectral function from the lattice Green’s function:

\[A(\mathbf{k}, \omega) = -\frac{1}{\pi} \mathrm{Im} \mathrm{Tr}G_{\nu\nu'}(\mathbf{k}, \omega).\]

The atom- and orbital-resolved \(k\)-summed spectral function:

\[[A(\omega)]_{mm'} = -\frac{1}{\pi} \mathrm{Im} \Big [ \sum_{\mathbf{k}} \Theta_{m\nu}G_{\nu\nu'}(\mathbf{k}, \omega)\Theta_{m'\nu'}^{\dagger} \Big ].\]

Functions

projected_spectral_function	Compute the atom- and orbital-resolved spectral function (interacting density of states).
spectral_function_on_high_symmetry_path	Compute momentum-resolved spectral function \(A^\sigma(k, \omega)\) along high-symmetry path.

Classes

SpectralFunctionKw	Store data of spectral functions.
SpectralFunctionW	Store data of spectral functions.