Module optical 

Optical conductivity from gauge-invariant velocity kernels.

The direct and simplex algorithms evaluate the same kernel,

\sigma^{ab}(\omega) = \sum_{n\ne m}\int_{BZ}
\frac{(f_n-f_m)v^a_{nm}v^b_{mn}}
{(E_n-E_m)^2-(\omega+i\eta)^2}\,dk,

and therefore share one Parameters input and one named OpticalConductivityResult output. A component calculation and a full Cartesian tensor calculation differ only through the direction matrix.

Structs

OpticalConductivityResult

Optical conductivity for one or more tensor components.