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arXiv · 1309.6107

Dynamics of the modified Kibble-Żurek mechanism in antiferromagnetic spin-1 condensates

Emilia Witkowska·Jacek Dziarmaga·Tomasz Świsłocki·Michał Matuszewski
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Abstract

We investigate the dynamics and outcome of a quantum phase transition from an antiferromagnetic to phase separated ground state in a spin-1 Bose-Einstein condensate of ultracold atoms. We explicitly demonstrate double universality in dynamics within experiments with various quench time. Furthermore, we show that spin domains created in the nonequilibrium transition constitute a set of mutually incoherent quasicondensates. The quasicondensates appear to be positioned in a semi-regular fashion, which is a result of the conservation of local magnetization during the post-selection dynamics.

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Emilia Witkowska, Jacek Dziarmaga, Tomasz Świsłocki, Michał Matuszewski. 2013-09-24. Dynamics of the modified Kibble-Żurek mechanism in antiferromagnetic spin-1 condensates. https://doi.org/10.1103/physrevb.88.054508

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