论文标题

高粘性的理论

Theory of the highly viscous flow

论文作者

Buchenau, U.

论文摘要

在固有状态之间具有固定密度的固有状态之间的不可逆跳跃的最新理论处理扩展到了完整的理论,将剪切弛豫归因于结构性埃斯赫尔比重排,涉及涉及软模式的创建和灭绝。该方案解释了接近1/2的Kohlrausch指数以及与低温玻璃异常的连接。得出了不可逆的和可逆的Kohlrausch松弛时间分布之间的连续性关系。整个光谱都可以在许多方面使用,不仅可以描述剪切弛豫数据,还可以将剪切弛豫数据与介电和散装松弛光谱联系起来,并从剪切弛豫数据中预测衰老,这是最近一次非常衰老的实验所证明的。

The recent theoretical treatment of irreversible jumps between inherent states with a constant density in shear space is extended to a full theory, attributing the shear relaxation to structural Eshelby rearrangements involving the creation and annihilation of soft modes. The scheme explains the Kohlrausch exponent close to 1/2 and the connection to the low temperature glass anomalies. A continuity relation between the irreversible and the reversible Kohlrausch relaxation time distribution is derived. The full spectrum can be used in many ways, not only to describe shear relaxation data, but also to relate shear relaxation data to dielectric and bulk relaxation spectra, and to predict aging from shear relaxation data, as demonstrated for a very recent aging experiment.

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