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arXiv · 1804.06970

Onsager vortex formation in two-component Bose-Einstein condensates

Junsik Han·Makoto Tsubota
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Abstract

We numerically study the dynamics of quantized vortices in two-dimensional two-component Bose-Einstein condensates (BECs) trapped by a box potential. For one-component BECs in a box potential, it is known that quantized vortices form Onsager vortices, which are clusters of same-sign vortices. We confirm that the vortices of the two components spatially separate from each other-even for miscible two-component BECs-suppressing the formation of Onsager vortices. This phenomenon is caused by the repulsive interaction between vortices belonging to different components, hence, suggesting a new possibility for vortex phase separation.

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Junsik Han, Makoto Tsubota. 2018-04-19. Onsager vortex formation in two-component Bose-Einstein condensates. https://doi.org/10.7566/jpsj.87.063601

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