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Emergence of classical structures from the quantum vacuum | | Mainak Mukhopadhyay
; Tanmay Vachaspati
; George Zahariade
; | | Date: |
15 Apr 2020 | | 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 $Z_2$ symmetry for different quench rates for the phase transition. We
find that the number density of kinks at late times universally scales as $C
(mt)^{-1/2}$ where $m$ is a mass scale in the model and $Capprox 0.25$; it
does not depend on the quench timescale in contrast to the Kibble-Zurek scaling
for thermal phase transitions. A subleading correction $propto t^{-3/2}$ to
the kink density depends on the details of the phase transition. | | Source: | arXiv, 2004.7249 | | Services: | Forum | Review | PDF | Favorites | |
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