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arXiv · 1810.02493

Dynamics of a quenched spin-1 antiferromagnetic condensate in a harmonic trap

L. M. Symes·D. Baillie·P. B. Blakie
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Abstract

In this paper we consider a recent experiment [Kang et al. PRA 95 053638 (2017)] in which an antiferromagnetic spin-1 condensate of 23Na atoms was quenched from the easy-axis polar phase into the easy-plane polar phase. We simulate the phase transition dynamics using a classical field method with noisy initial conditions and find good agreement to the experimental observations. We analyse the late-time dynamics in terms of phase ordering using the nematic order parameter that we have developed in earlier work [Symes et al. PRA 96, 013602 (2017)]. We show that these experiments are able to explore the early stages of universal phase ordering where the domains grow diffusively.

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L. M. Symes, D. Baillie, P. B. Blakie. 2018-10-05. Dynamics of a quenched spin-1 antiferromagnetic condensate in a harmonic trap. https://doi.org/10.1103/physreva.98.063618

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