John Bohn, UC Boulder

February 25th, 10-11am Central Time (Registration Details Below)

What Happens in the Complex Stays in the Complex: Long-Lived Resonant States in Ultracold Molecular Collisions

As detailed in the previous talk, ultracold diatomic molecules are now the subject of intense experimental scrutiny, providing novel and precise ways to manipulate and probe these four-body systems. Of particular importance are the four-body collision complexes formed during a collision, about which a few things are known, but not nearly enough. This talk will briefly review theoretical aspects of these complexes, focusing on their rate of formation, response to electric fields, and their (surprisingly long) lifetimes. The discussion will be based on a tractable statistical model, which is illustrative but likely not the final word on the subject.