Term of Award

Spring 2018

Degree Name

Master of Science in Applied Physical Science (M.S.)

Document Type and Release Option

Thesis (open access)

Copyright Statement / License for Reuse

Digital Commons@Georgia Southern License


Department of Chemistry

Committee Chair

Mark Edwards

Committee Member 1

Clayton Heller

Committee Member 2

Maxim Durach


We studied how smooth flow can be produced by stirring an ultracold atom circuit consisting of a gaseous Bose--Einstein condensate (BEC) confined in a ``racetrack'' potential. The racetrack potential was made up of two straight parallel channels of length L connected on both ends by semicircular channels of the same width and (energy) depth as the straightaways. We used the Gross--Pitaevskii equation to simulate the behavior of the BEC in this potential when stirred by a rectangular paddle at various speeds and barrier heights. We found that smooth flow could be produced and conducted a systematic study of the flow produce under various conditions. We also laid the groundwork for the development of a simple model of the stirring of the BEC. This understanding should enable the design of a stirring sequence that would produce a given flow on demand.

Research Data and Supplementary Material