oct-vdW_c6

NAME

oct-vdW_c6 - C6 coefficient from a pair of cross_section_tensor files

USAGE

oct-vdW_c6 cross_section1 cross_section2

DESCRIPTION

This script computes C6 coefficient from a pair of cross_section_tensor files, using the Casimir-Polder formula

$$ C_{6,ij}=\frac{3}{\pi}\int d\omega \alpha_i(\omega)\alpha_j(\omega) . $$