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arXiv · 1803.06606

Stripes and honeycomb lattice of quantized vortices in rotating two-component Bose-Einstein condensates

Kenichi Kasamatsu·Kouhei Sakashita
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Abstract

We study numerically the structure of a vortex lattice in two-component Bose-Einstein condensates with equal atomic masses and equal intra- and inter-component coupling strengths. The numerical simulations of the Gross-Pitaevskii equation show that the quantized vortices form uncertain lattice configurations accompanying the vortex stripes, honeycomb lattices, and their complexes. This is a result of the degeneracy of the system for the SU(2) symmetric operation, which makes a continuous transformation between the above structures. In terms of the pseudospin representation, the complex lattice structures are identified to a hexagonal lattice of doubly-winding half-skyrmions.

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Kenichi Kasamatsu, Kouhei Sakashita. 2018-03-18. Stripes and honeycomb lattice of quantized vortices in rotating two-component Bose-Einstein condensates. https://doi.org/10.1103/physreva.97.053622

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