energy levels / repulsive energy / energy eigenvalue / scalar energy / higher energy states / classical potential energy function / energy eigenvalue spectrum / larger energy scales / arbitrary energy / potential energy / eigenfunction solutions / potential energy function / direct energy / energy eigenvalues / wellcapture chemical reactions / classical systems / power law / energy spectrum / minimalist potential energy function / quantum energy / attractive energy / potential energy gives / molecular systems / chemical environments / potential energy field / energy / /