# Cesium bright matter-wave solitons and soliton trains

## TL;DR

This paper investigates cesium Bose-Einstein condensate bright matter-wave solitons, demonstrating their production, dependence on interactions, formation of soliton trains, and BEC fragmentation, along with a setup for studying soliton collisions.

## Contribution

It introduces a new experimental setup for cesium BEC solitons, explores soliton train formation, and observes BEC fragmentation outside confinement.

## Key findings

- Successfully produced a single cesium BEC soliton.
- Showed soliton atom number depends on interatomic interactions.
- Observed formation of soliton trains and BEC fragmentation.

## Abstract

A study of bright matter-wave solitons of a cesium Bose-Einstein condensate (BEC) is presented. Production of a single soliton is demonstrated and dependence of soliton atom number on the interatomic interaction is investigated. Formation of soliton trains in the quasi one-dimensional confinement is shown. Additionally, fragmentation of a BEC has been observed outside confinement, in free space. In the end a double BEC production setup for studying soliton collisions is described.