Stable vortex loops in two-species BECs

TL;DR

This paper investigates the theoretical possibility of creating stable, stationary closed vortex loops in two-species Bose-Einstein condensates, drawing analogies to cosmic strings and discussing experimental creation methods.

Contribution

It introduces the concept of stable vortex loops in two-species BECs and analyzes the conditions for their existence and potential experimental realization.

Findings

Identification of parameter regions supporting vortex loops

Proposal of experimental methods for vortex loop creation

Analogy to cosmic strings and vortons

Abstract

We consider the creation of stable, stationary closed vortex loops, analogue to the vortons and superconducting cosmic strings, in cold atom BEC's. We explore the parameter region where these solutions are likely to exist and comment on methods to create them experimentally.