Chapter

Overview of different characterizations of dynamic heterogeneity

Ludovic Berthier, Giulio Biroli, Jean‐Philippe Bouchaud and Robert L. Jack

in Dynamical Heterogeneities in Glasses, Colloids, and Granular Media

Published in print July 2011 | ISBN: 9780199691470
Published online September 2011 | e-ISBN: 9780191729799 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199691470.003.0003

Series: International Series of Monographs on Physics

Overview of different characterizations of dynamic heterogeneity

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Dynamic heterogeneity is now recognized as a central aspect of structural relaxation in disordered materials with slow dynamics, and was the focus of intense research in the last decade. Here, this chapter describes how initial, indirect observations of dynamic heterogeneity have recently evolved into well‐defined, quantitative, statistical characterizations, in particular through the use of high‐order correlation and response functions. The chapter highlights both recent progress and open questions about the characterization of dynamic heterogeneity in glassy materials. The chapter also discusses the limits of available tools and describe a few candidates for future research in order to gain a deeper understanding of the origin and nature of glassiness in disordered systems.

Keywords: glass transition; dynamical heterogeneity; dynamic length scales; dynamic susceptibility; high order correlation functions

Chapter.  20151 words.  Illustrated.

Subjects: Mathematical and Statistical Physics

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