Sympathetic cooling route to Bose-Einstein condensate and Fermi-liquid mixtures

TL;DR

This paper proposes a sympathetic cooling method for Fermi-Bose mixtures, enabling access to Fermi-liquid regimes by mitigating fermion-hole heating, demonstrated with a 6Li and 87Rb mixture using energy-based modeling.

Contribution

It introduces an energy-based formalism for sympathetic cooling and shows how different trapping frequencies enhance cooling efficiency in a specific atomic mixture.

Findings

Effective mitigation of fermion-hole heating in Fermi-Bose mixtures.

Enhanced cooling performance with different trapping frequencies.

Access to Fermi-liquid temperature regimes in dilute atomic gases.

Abstract

We discuss a sympathetic cooling strategy that can successfully mitigate fermion-hole heating in a dilute atomic Fermi-Bose mixture and access the temperature regime in which the fermions behave as a Fermi liquid. We introduce an energy-based formalism to describe the temperature dynamics with which we study a specific and promising mixture composed of 6Li and 87Rb. Analyzing the harmonically trapped mixture, we find that the favourable features of this mixture are further enhanced by using different trapping frequencies for the two species.