Sweeping a molecular Bose-Einstein condensate across a Feshbach resonance

TL;DR

This paper investigates how a magnetic-field sweep across a Feshbach resonance affects the dissociation of a molecular Bose-Einstein condensate, focusing on the resulting atomic energy distribution and its dependence on the sweep rate.

Contribution

It provides a detailed analysis of the energy distribution of atoms after a Feshbach sweep, aligning theoretical predictions with experimental observations.

Findings

Energy distribution shape depends on sweep rate

Good agreement with recent experimental data

Provides insights into molecular dissociation dynamics

Abstract

We consider the dissociation of a molecular Bose-Einstein condensate during a magnetic-field sweep through a Feshbach resonance that starts on the molecular side of the resonance and ends on the atomic side. In particular, we determine the energy distribution of the atoms produced after the sweep. We find that the shape of the energy distribution strongly depends on the rate of the magnetic-field sweep, in a manner that is in good agreement with recent experiments.