Vortex line in a neutral finite-temperature superfluid Fermi gas

TL;DR

This paper investigates the microscopic structure and thermodynamic properties of vortices in a dilute superfluid Fermi gas at finite temperature, using self-consistent Bogoliubov-de Gennes theory.

Contribution

It provides a detailed analysis of vortex core excitations, critical temperature shifts, and compares numerical results with analytical models in superfluid Fermi gases.

Findings

Identification of gapless excitations inside vortex cores

Quantification of critical temperature shifts due to vortices

Proposed detection scheme for vortex core states

Abstract

The structure of an isolated vortex in a dilute two-component neutral superfluid Fermi gas is studied within the context of self-consistent Bogoliubov-de Gennes theory. Various thermodynamic properties are calculated and the shift in the critical temperature due to the presence of the vortex is analyzed. The gapless excitations inside the vortex core are studied and a scheme to detect these states and thus the presence of the vortex is examined. The numerical results are compared with various analytical expressions when appropriate.