Onsager vortex formation in two-component Bose-Einstein condensates

Onsager vortex formation in two-component Bose-Einstein condensates

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 con...

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Veröffentlicht in:arXiv.org 2018-04
Hauptverfasser: Han, Junsik, Tsubota, Makoto
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Bose-Einstein condensates
Matter & antimatter
Phase separation
Physics - Quantum Gases
Vortices
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description 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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subjects Bose-Einstein condensates
Matter & antimatter
Phase separation
Physics - Quantum Gases
Vortices
title Onsager vortex formation in two-component Bose-Einstein condensates
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