Ultracold three-body collisions near overlapping Feshbach resonances

Understand

We present a comprehensive collection of ultracold three-body collisions properties near overlapping Feshbach resonances.

• Our results incorporate variations of all scattering lengths and demonstrate novel collisional behavior, such as atom-molecule interference effects.
• Taking advantage of the unique ways in which these collisions reflect Efimov physics, new pathways to control atomic and molecular losses open up.
• Further, we show that overlapping resonances can greatly improve the chances of observing multiple Efimov features in an ultracold quantum gas for nearly any system.