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arXiv 2001.09831cond-mat.dis-nn
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加德纳眼镜相关长度表

The Gardner correlation length scale in glasses

M. J. Godfrey, M. A. Moore

摘要:

Gardner长度尺度$ξ$是Gardner转变附近的相关长度,Gardner转变是玻璃中避免的转变,其中玻璃相的相空间在实验时间尺度上断裂成较小的子盆地。我们认为,$ξ$增长像$ \sim \sqrt{B_{\infty}/G_{\infty}}$,其中$B_{\infty}$是体积模量和$G_{\infty}$是剪切模量,都在玻璃态的高频极限测量。我们建议,$ξ$可能推断应力-应力关联函数,这是更实际的实验研究比研究两个副本的系统,这只能在数值模拟。我们的论点说明了明确的计算系统中移动的磁盘在一个狭窄的通道,这是完全解决了传输矩阵技术。

英文摘要:

The Gardner length scale $ξ$ is the correlation length in the vicinity of the Gardner transition, which is an avoided transition in glasses where the phase space of the glassy phase fractures into smaller sub-basins on experimental time scales. We argue that $ξ$ grows like $ \sim \sqrt{B_{\infty}/G_{\infty}}$, where $B_{\infty}$ is the bulk modulus and $G_{\infty}$ is the shear modulus, both measured in the high-frequency limit of the glassy state. We suggest that $ξ$ might be inferred from stress-stress correlation functions, which is more practical for experimental investigation than studying two copies of the system, which can only be done in numerical simulations. Our arguments are illustrated by explicit calculations for a system of disks moving in a narrow channel, which is solved exactly by transfer matrix techniques.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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