An assessment of the concept of fragility

Gilles Tarjus; Christiane Alba-Simionesco

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arXiv · 1401.2812

An assessment of the concept of fragility

Gilles Tarjus·Christiane Alba-Simionesco

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Abstract

The concept of "fragility", which was introduced to characterize the degree of super-Arrhenius temperature dependence of the relaxation time and transport coefficients, has since been taken as a key quantity that seems to correlate with other properties of glass-forming liquids and polymers. With the goal of assessing the usefulness and the robustness of the concept, we address here several questions: How to best quantify fragility? How significant are the observed differences in fragility? Is fragility connected to "cooperativity" and collective behavior?

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Gilles Tarjus, Christiane Alba-Simionesco. 2014-01-13. An assessment of the concept of fragility. https://arxiv.org/abs/1401.2812

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