Mean-field analysis of the stability of a K-Rb Fermi-Bose mixture

TL;DR

This paper compares experimental stability data of a K-Rb Fermi-Bose mixture with mean-field theory to refine the estimate of interspecies scattering length.

Contribution

It introduces a mean-field model comparison to experimental data to improve the accuracy of interspecies scattering length measurements.

Findings

Better estimate of the interspecies scattering length achieved.

Validation of mean-field predictions against experimental stability diagram.

Insights into the interaction effects in Fermi-Bose mixtures.

Abstract

We compare the experimental stability diagram of a Fermi-Bose mixture of K-40 and Rb-87 atoms with attractive interaction to the predictions of a mean-field theoretical model. We discuss how this comparison can be used to give a better estimate of the interspecies scattering length, which is currently known from collisional measurements with larger uncertainty.