Three-body loss in molecules under single-frequency microwave shielding

We report on the observation of three-body loss in microwave shielded molecules. Single-field microwave shielding is found to suppress two-body loss, but to enable three-body loss. We find that the loss rate coefficient strongly depends on the sample temperature and follows a power law dependence with respect to the induced dipole moment. We present a theoretical model treating the physics of interacting microwave shielded polar molecules. Preliminary results suggest that there is a domain of parameters over which two-body bound states exist and lead to an enhancement of the three-body loss rate. Finally, we attempt to theoretically calculate the loss rate following first principle classical and quantum methods.