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Entropic measure of spatial disorder for systems of finite-sized objects

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  • Piasecki, R.

Abstract

We consider the relative configurational entropy per cell SΔ as a measure of the degree of spatial disorder for systems of finite-sized objects. It is highly sensitive to deviations from the most spatially ordered reference configuration of the objects. When applied to a given binary image it provides the quantitatively correct results in comparison to its point object version. On examples of simple cluster configurations, two-dimensional Sierpiński carpets and population of interacting particles, the behaviour of SΔ is compared with the normalized information entropy H′ introduced by Van Siclen [Phys. Rev. E 56 (1997) 5211]. For the latter example, the additional middle-scale features revealed by our measure may indicate for the traces of self-similar structure of the weakly ramified clusters. In the thermodynamic limit, the formula for SΔ is also given.

Suggested Citation

  • Piasecki, R., 2000. "Entropic measure of spatial disorder for systems of finite-sized objects," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 277(1), pages 157-173.
    • Handle: RePEc:eee:phsmap:v:277:y:2000:i:1:p:157-173
    DOI: 10.1016/S0378-4371(99)00458-6
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    References listed on IDEAS

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