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Defect formation in inhomogeneous 2-nd order phase transition: theory and experiment

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arxiv cond-mat/9905320 v3 pith:ZZCQJKIC submitted 1999-05-21 cond-mat

Defect formation in inhomogeneous 2-nd order phase transition: theory and experiment

classification cond-mat
keywords formationdefecttransitionduringfrontinhomogeneousphasepropagating
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The status quo in our understanding of defect formation during a rapid transition into the broken symmetry state in condensed matter and cosmology is discussed. An observation of vortex nucleation in neutron absorption experiments in superfluid 3He-B is interpreted in terms of defect formation during inhomogeneous cooling through T_c. Due to the temperature gradient in the locally heated region the superfluid phase transition occurs as a propagating front. The theoretical considerations of vortex formation at the propagating front are based on work by Kibble-Volovik, Kopnin-Thuneberg, and Aranson-Kopnin-Vinokur.

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