Nearly logarithmic decay in the colloidal hard-sphere system

Sperl, Matthias

Nearly logarithmic decay in the colloidal hard-sphere system

Dateien

Nearly_logarithmic_decay_in_the_colloidal_hard_sphere_system.pdf(140.9 KB)

Datum

2005

Autor:innen

Sperl, Matthias

Publikationstyp

Zeitschriftenartikel

Erschienen in

Physical Review E ; 71 (2005). - 60401

Zusammenfassung

Nearly logarithmic decay is identified in the data for the mean-squared displacement of the colloidal hardsphere system at the liquid-glass transition. The solutions of the mode-coupling theory for the microscopic equations of motion fit the experimental data well. Based on these equations, the nearly logarithmic decay is explained as the equivalent of a ß-peak phenomenon, a manifestation of the critical relaxation when the coupling between of the probe variable and the density fluctuations is strong. In an asymptotic expansion, a Cole-Cole formula including corrections is derived from the microscopic equations of motion, which describes the experimental data for three decades in time.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

SPERL, Matthias, 2005. Nearly logarithmic decay in the colloidal hard-sphere system. In: Physical Review E. 71, 60401. Available under: doi: 10.1103/PhysRevE.71.060401

BibTex

@article{Sperl2005Nearl-9452,
  year={2005},
  doi={10.1103/PhysRevE.71.060401},
  title={Nearly logarithmic decay in the colloidal hard-sphere system},
  volume={71},
  journal={Physical Review E},
  author={Sperl, Matthias},
  note={Article Number: 60401}
}

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    <dcterms:abstract xml:lang="eng">Nearly logarithmic decay is identified in the data for the mean-squared displacement of the colloidal hardsphere system at the liquid-glass transition. The solutions of the mode-coupling theory for the microscopic equations of motion fit the experimental data well. Based on these equations, the nearly logarithmic decay is explained as the equivalent of a ß-peak phenomenon, a manifestation of the critical relaxation when the coupling between of the probe variable and the density fluctuations is strong. In an asymptotic expansion, a Cole-Cole formula including corrections is derived from the microscopic equations of motion, which describes the experimental data for three decades in time.</dcterms:abstract>
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