Role of the Majorana Fermion and the Edge Mode in Chiral Superfluidity near a p-Wave Feshbach Resonance

TL;DR

This paper explores how Majorana fermions and edge modes influence the detection of chiral p-wave superfluidity in Fermi gases near p-wave Feshbach resonances, highlighting their persistence across the BCS-BEC crossover.

Contribution

It provides a theoretical analysis linking Majorana modes and edge states to observable superfluid features across different coupling regimes.

Findings

Majorana zero energy modes are connected to vortex core states.

Edge modes contribute to intrinsic angular momentum.

Superfluidity can be detected throughout the BCS-BEC regimes.

Abstract

The visualization of chiral p-wave superfluidity in Fermi gases near p-wave Feshbach resonances is theoretically examined. It is proposed that the superfluidity becomes detectable in the entire BCS-BEC regimes through (i) vortex visualization by the density depletion inside the vortex core and (ii) intrinsic angular momentum in vortex free states. It is revealed that both (i) and (ii) are closely connected with the Majorana zero energy mode of the vortex core and the edge mode, which survive until the strong coupling BCS regime is approached from the weak coupling limit and vanish in the BEC regime.