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arXiv 1804.04834cond-mat.dis-nncond-mat.soft
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玻璃和颗粒物质的爱德华兹场论

Edwards field theory for glasses and granular matter

E. DeGiuli

摘要:

对非晶态固体的固有状态作了最小限度的描述。使用场论,适用于当一个系统被探测在长的长度尺度,它表明,非热非晶态固体具有长程相关性,在他们的应力,最近观察到的过冷液体,胶体,和颗粒物质。明确的预测,在二维和三维,在良好的协议与模拟数据的过冷液体的制冷剂。它表明,当应用到固体与严格排斥相互作用,最简单的,天真的理论会导致一个悖论。这个悖论是解决,它表明,一个非平凡的,非高斯理论是必要的,这样的材料。在鞍点水平上显示了对双折射器的修改。在所有情况下,'状态方程'有关的波动施加的应力推导,以及固定的空间结构的应力在任意几何形状的场方程。在三维非晶系统中发现了一个新的全息量。

英文摘要:

A minimal description of the inherent states of amorphous solids is presented. Using field theory, applicable when a system is probed at long length scales, it is shown that athermal amorphous solids have long-range correlations in their stresses, as recently observed in supercooled liquids, colloids, and granular matter. Explicit predictions for the correlators are presented, in both 2D and 3D, in excellent agreement with simulation data on supercooled liquids. It is shown that when applied to solids with strictly repulsive interactions, the simplest, naïve theory leads to a paradox. This paradox is resolved, and it is shown that a nontrivial, non-Gaussian theory is necessary for such materials. Modifications to the correlators are shown, at the saddle-point level. In all cases, `equations of state' relating fluctuations to imposed stresses are derived, as well as field equations that fix the spatial structure of stresses in arbitrary geometries. A new holographic quantity in 3D amorphous systems is identified.

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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