Vortex and soliton dynamics in particle-hole symmetric superfluids

TL;DR

This paper investigates how topological defects such as vortices and solitons evolve in particle-hole symmetric superfluids, revealing unique dynamics that differ from conventional superfluids, with potential experimental signatures.

Contribution

It introduces the study of topological defect dynamics specifically in particle-hole symmetric superfluids, highlighting their distinct evolution compared to standard superfluid models.

Findings

Distinct time evolution of defects in particle-hole symmetric superfluids

Observable signatures of particle-hole symmetry in defect decay

Comparison with Gross-Pitaevskii predictions for BECs

Abstract

We propose to induce topological defects in particle-hole symmetric superfluids, with the prime example of the BCS state of ultracold atoms and detect their time evolution and decay. We demonstrate that the time evolution is qualitatively distinct for particle-hole symmetric superfluids, and point out that the dynamics of topological defects is strongly modified in particle-hole symmetric fluids. We obtain results for different charges and compare them with the standard Gross-Pitaevskii prediction for Bose-Einstein condensates. We highlight the observable signatures of the particle-hole symmetry in the dynamics of decaying solitons and subsequent vortices.