Cavity loss may also enhance the rate of photochemical reactions as demonstrated in Fig. , adapted from Ref. 305. In this H 2 dissociation model, the molecular excited state has a broad potential well that resists photodissociation while the molecular ground state has a potential well that resists dissociation near the equilibrium bond distance but allows dissociation at farther nuclear configurations (Fig. ). With the presence of light-matter coupling and cavity loss, a nuclear wavepacket starting on the molecular excited surface can transfer to the |g, 1⟩ state and experience cavity loss to the ground state while maintaining the momentum in the direction of dissociation it gained while on the molecular excited surface. Afterward, part of this wavepacket can dissociate on the molecular ground state potential. As shown in Fig. (ii), the loss rate of the excited state due to coupling with the lossy photonic state is most pronounced where the two surfaces intersect and is maximal for the cavity frequency shown in Fig. (i) which corresponds to the dashed white line in Fig. 18b(ii). This large loss rate along with the wavepacket dynamics mentioned previously showcases significant photodissociation probability (Fig. ) when the cavity frequency is near the resonance point shown in Fig. (i), and is much smaller for other cavity detunings. This demonstrates the ability of cavity loss to take advantage of the curvatures of both the molecular ground and excited states to encourage a reaction that was resisted outside the cavity.