The spatial profile of the matter distribution in a dilute atomic-molecular Fermi cloud

TL;DR

This paper explores the layered spatial structure of a dilute atomic-molecular Fermi cloud at low temperatures, revealing a superfluid core, a mixed mantle, and a normal Fermi gas outer layer.

Contribution

It provides a detailed analysis of the spatial distribution and layering in an atomic-molecular Fermi cloud, highlighting the formation of superfluid and normal regions.

Findings

Superfluid bosonic core at the trap center

Layered structure with a superfluid mantle

Outer layer of normal Fermi gas

Abstract

A dilute atomic-molecular fermion in a trap acquires a rather complex layered spatial structure. At very low temperatures, typically at the center of the trap, a superfluid bosonic core is formed out of dimers, weakly bound pairs of fermionic atoms. Surrounding this core is a mantle, formed by a mixture of superfluid bosonic dimers and superfluid fermionic atoms. The outermost layer consists of only fermionic atoms, forming mostly a normal Fermi gas.