Electric field dependence of complex-dominated ultracold molecular collisions

Recent experiments on ultracold nonreactive dipolar molecules have observed high two-body losses, even though these molecules can undergo neither inelastic, nor reactive (as they are in their absolute ground state), nor light-assisted collisions (if they are measured in the dark). In the presence of an electric field these losses seem to be near universal (the probability of loss at short range is near unity) while in the absence of it the...