Avramenko & Rury also noted that the energy gap law can be used to form a microscopic model of an exciton-polariton coupled system. Looking closely at polaritonic effects and how they could control ultrafast internal conversion in zinc(II) tetraphenyl porphyrin, their results (Figure ) suggest external physical parameters of polariton formation affects the internal conversion rate. Specifically, it may be that polariton coupling strongly effects the electronic energies, or the strong lightmatter coupling may influence the vibronic couplings directly. This of course agrees with much of the previously highlighted work, however their delve into their results provides further evidence for this observation.