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arXiv · 1906.11453

Suppressing the Kibble-Zurek mechanism by a symmetry-violating bias

J. Rysti·J. T. Mäkinen·S. Autti·T. Kamppinen·G. E. Volovik·V. B. Eltsov
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Abstract

The formation of topological defects in continuous phase transitions is driven by the Kibble-Zurek mechanism. Here we study the formation of single- and half-quantum vortices during transition to the polar phase of $^3$He in the presence of a symmetry-breaking bias provided by the applied magnetic field. We find that vortex formation is suppressed exponentially when the length scale associated with the bias field becomes smaller than the Kibble-Zurek length. We thus demontrate an experimentally feasible shortcut to adiabaticity -- an important aspect for further understanding of phase transitions as well as for engineering applications such as quantum computers or simulators.

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J. Rysti, J. T. Mäkinen, S. Autti, T. Kamppinen, G. E. Volovik, V. B. Eltsov. 2019-06-27. Suppressing the Kibble-Zurek mechanism by a symmetry-violating bias. https://doi.org/10.1103/physrevlett.127.115702

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