Emergence of classical structures from the quantum vacuum
arXiv:2004.07249 · doi:10.1103/PhysRevD.102.056021
Abstract
After a quantum phase transition the quantum vacuum can break up to form classical topological defects. We examine this process for scalar field models with symmetry for different quench rates for the phase transition. We find that the number density of kinks at late times universally scales as where is a mass scale in the model and ; it does not depend on the quench timescale in contrast to the Kibble-Zurek scaling for thermal phase transitions. A subleading correction to the kink density depends on the details of the phase transition.
arXiv comment7 pages, 5 figures, published version
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