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Configurational Entropy of Confined Yukawa Clusters

Anisimovas, E; Radzvilavičius, A; (2012) Configurational Entropy of Confined Yukawa Clusters. Contributions to Plasma Physics , 52 (3) pp. 170-173. 10.1002/ctpp.201100077.

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Confined strongly coupled systems, such as dust clusters in complex plasmas, are known to support multiple stable configurations corresponding to the same number of particles. In this work, we exploit the recently introduced concept of configurational entropy as a robust measure of the uncertainty arising due to the existence of multiple stable states with different occurrence probabilities. We apply this concept to classical Yukawa clusters of up to 100 particles in two- and three-dimensional parabolic traps and investigate the dependence of the entropy on the system size, dimensionality, interparticle interaction range and anisotropy of the parabolic confinement. A universal behaviour of the configurational entropy close to the dimensional (zigzag) transition is reported. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Type: Article
Title: Configurational Entropy of Confined Yukawa Clusters
DOI: 10.1002/ctpp.201100077
UCL classification: UCL > Office of the President and Provost
UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
URI: http://discovery.ucl.ac.uk/id/eprint/1364259
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