Biomedical subjects
Publications and source records attributed to RJ Rivers.
In parallel with Kibble's description of the onset of phase transitions in the early Universe, Zurek has provided a simple picture for the onset of phase transitions in condensed matter systems, supported by agreement with experiments in 3He and superconductors. We show how experiments with annular Josephson tunnel junctions can, and do, provide further support for this scenario.
We examine the Zurek scenario for the production of vortices in quenches of liquid 4He in the light of recent experiments. Extending our previous results to later times, we argue that short wavelength thermal fluctuations make vortices poorly defined until after the transition has occurred. Further, if and when vortices appear, it is plausible that they will decay faster than anticipated from turbulence experiments, irrespective of quench rates.
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