Consequences of superfluidity on the expansion of a rotating Bose-Einstein condensate: a numerical study

Abstract

[EN] A Bose-Einstein Condensate (BEC) is a state of matter first theorized in the 1920s by S. Bose and A. Einstein that emerges at very low temperatures with bosonic particles. These ultra-cold gasses have many quantum properties that can be visualized macroscopically, which make them a very interesting tool in various research areas of modern physics. One of such phenomena is superfluidity, which is characterized by the lack of viscosity. The main goal of this thesis is to numerically simulate the free expansion a rotating Bose-Einstein condensate, in order to analyze the intriguing effects of superfluidity. We will also compare that to classical thermal gasses and non-rotating BECs to highlight the differences.