Creation and dynamics of two-dimensional skyrmions in antiferromagnetic spin-1 Bose-Einstein condensates

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2014
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Mcode
Degree programme
Language
en
Pages
1-7
Series
Physical Review A, Volume 89, issue 3
Abstract
We numerically simulate the creation process of two-dimensional skyrmionic excitations in antiferromagnetic spin-1 Bose-Einstein condensates by solving the full three-dimensional dynamics of the system from the Gross-Pitaevskii equation. Our simulations reproduce quantitatively the experimental results of Choi et al. [Phys. Rev. Lett. 108, 035301 (2012)] without any fitting parameters. Furthermore, we examine the stability of the skyrmion by computing the temporal evolution of the condensate in a harmonic potential. The presence of both the quadratic Zeeman effect and dissipation in the simulations is vital for reproducing the experimentally observed decay time.
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Ollikainen , T , Ruokokoski , E & Mottonen , M 2014 , ' Creation and dynamics of two-dimensional skyrmions in antiferromagnetic spin-1 Bose-Einstein condensates ' , Physical Review A , vol. 89 , no. 3 , 033629 , pp. 1-7 . https://doi.org/10.1103/PhysRevA.89.033629