Microscopic Structure of a Vortex Line in a Superfluid Fermi Gas

TL;DR

This paper investigates the microscopic structure of a vortex line in a superfluid Fermi gas at zero temperature using Bogoliubov-de Gennes theory, revealing how vortex energy relates to the BCS coherence length.

Contribution

It provides a detailed microscopic analysis of vortex properties in superfluid Fermi gases, connecting numerical results with analytical expressions.

Findings

Vortex energy is governed by the zero-temperature BCS coherence length.

The pair potential, density, energy, and current distribution are characterized.

Numerical results align with analytical predictions.

Abstract

The microscopic properties of a single vortex in a dilute superfluid Fermi gas at zero temperature are examined within the framework of self-consistent Bogoliubov-de Gennes theory. Using only physical parameters as input, we study the pair potential, the density, the energy, and the current distribution. Comparison of the numerical results with analytical expressions clearly indicates that the energy of the vortex is governed by the zero-temperature BCS coherence length.