English

Kibble Zurek mechanism in rapidly quenched phase transition dynamics

Statistical Mechanics 2021-10-18 v1 Superconductivity High Energy Physics - Theory

Abstract

We propose a theory to explain the experimental observed deviation from the Kibble-Zurek mechanism (KZM) scaling in rapidly quenched critical phase transition dynamics. There is a critical quench rate τQc1\tau_{Q}^{c1} above it the KZM scaling begins to appear. Smaller than τQc1\tau_Q^{c1}, the defect density nn is a constant independent of the quench rate but depends on the final temperature TfT_f as nLdϵTfdνn \propto L^d \epsilon_{T_f} ^{d \nu}, the freeze out time t^\hat{t} admits the scaling law t^ϵTfνz\hat{t} \propto \epsilon_{T_f}^{-\nu z} where dd is the spatial dimension, ϵTf=(1Tf/Tc)\epsilon_{T_f}= (1-T_f/T_c) is the dimensionless reduced temperature, LL is the sample size, ν\nu and zz are spatial and dynamical critical exponents. Quench from TcT_c, the critical rate is determined by the final temperature TfT_f as τQc1ϵTf(1+zν)\tau_Q^{c1} \propto \epsilon_{T_f}^{-(1+z \nu)} . All the scaling laws are verified in a rapidly quenched superconducting ring via the AdS/CFT correspondence.

Keywords

Cite

@article{arxiv.2110.07969,
  title  = {Kibble Zurek mechanism in rapidly quenched phase transition dynamics},
  author = {Chuan-Yin Xia and Hua-Bi Zeng},
  journal= {arXiv preprint arXiv:2110.07969},
  year   = {2021}
}

Comments

5 pages, 4 figs