Universal breakdown of Kibble-Zurek scaling in fast quenches across a phase transition

• URL: http://arxiv.org/abs/2204.13529v2
• Date: Wed, 3 May 2023 07:33:26 GMT
• Title: Universal breakdown of Kibble-Zurek scaling in fast quenches across a phase transition
• Authors: Hua-Bi Zeng, Chuan-Yin Xia, Adolfo del Campo
• Abstract summary: The crossing of a continuous phase transition gives rise to the formation of topological defects in the limit of slow quenches. The Kibble-Zurek mechanism (KZM) predicts a universal power-law scaling of the defect density as a function of the quench time.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The crossing of a continuous phase transition gives rise to the formation of topological defects described by the Kibble-Zurek mechanism (KZM) in the limit of slow quenches. The KZM predicts a universal power-law scaling of the defect density as a function of the quench time. We focus on the deviations from KZM experimentally observed in rapid quenches and establish their universality. While KZM scaling holds below a critical quench rate, for faster quenches the defect density and the freeze-out time become independent of the quench rate and exhibit a universal power-law scaling with the final value of the control parameter. These predictions are verified in several paradigmatic scenarios in both the classical and quantum domains.

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