Bright vortex solitons in Bose Condensates

TL;DR

This paper explores the theoretical possibility of creating and analyzing bright vortex solitons in three-dimensional attractive Bose-Einstein condensates with radial trapping, focusing on their stability and interactions.

Contribution

It introduces the concept of 3D bright vortex solitons in Bose-Einstein condensates and examines their stability conditions and inelastic interactions.

Findings

Bright vortex solitons can exist in 3D attractive BECs with radial trapping.

Interactions between two such solitons are inelastic and involve particle exchange.

The interaction is predominantly repulsive except near zero phase difference.

Abstract

We suggest the possibility of observing and studying bright vortex solitons in attractive Bose-Einstein condensates in three dimensions with a radial trap. Such systems lie on the verge of critical stability and we discuss the conditions of their stability. We study the interaction between two such solitons. Unlike the text-book solitons in one dimension, the interaction between two radially trapped and axially free three-dimensional solitons is inelastic in nature and involves exchange of particles and deformation in shape. The interaction remains repulsive for all phase delta between them except for delta \approx 0.