2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17710Zurek has provided simple causal bounds for the onset of phase transitions in condensed matter, that mirror those proposed by Kibble for relativistic quantum field theory. In this paper we show how earlier experiments with annular Josephson tunnel Junctions are consistent with this scenario, and suggest how further experiments might confirm it.15 pages, to be published in Journal of Low Temperature Physics (June/July 2001) as part of the refereed proceedings of the ULTI meeting, Finland, Jan 2001Condensed Mattertext