Ultracold three-body collisions near overlapping Feshbach resonances

TL;DR

This paper explores ultracold three-body collisions near overlapping Feshbach resonances, revealing novel behaviors and pathways to control atomic and molecular losses, with implications for observing Efimov physics in quantum gases.

Contribution

It provides a comprehensive analysis of three-body collision properties near overlapping Feshbach resonances, highlighting new interference effects and control mechanisms.

Findings

Demonstrates atom-molecule interference effects in collisions

Shows overlapping resonances enhance Efimov feature observability

Identifies new pathways for controlling atomic and molecular losses

Abstract

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.