arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.10183cond-mat.softcond-mat.dis-nncond-mat.stat-mech
收藏

玻璃形成液体中的静态自诱导不均匀性:显微镜下的重叠

Static self-induced heterogeneity in glass-forming liquids: Overlap as a microscope

Benjamin Guiselin, Gilles Tarjus, Ludovic Berthier

摘要:

我们提出并数值实现了一个本地探头的静态自诱导的异质性特征玻璃形成液体。该方法依赖于在无约束边界的介观腔中测量的配置对之间的重叠的平衡统计。通过系统地改变探测腔的位置,我们直接检测重叠波动的空间变化。我们提供了一个详细的分析的统计数据的局部估计的构型熵,我们推断的无定形状态之间的表面张力的估计,成分都在随机的一阶过渡理论的基础上的玻璃形成。我们的研究结果代表了第一次直接尝试可视化和量化支撑玻璃形成热力学的自诱导异质性。他们铺平了道路,粗粒度的有效理论的发展和直接评估的作用,热力学的激活动力学的深度过冷液体。

英文摘要:

We propose and numerically implement a local probe of the static self-induced heterogeneity characterizing glass-forming liquids. The method relies on the equilibrium statistics of the overlap between pairs of configurations measured in mesoscopic cavities with unconstrained boundaries. By systematically changing the location of the probed cavity, we directly detect spatial variations of the overlap fluctuations. We provide a detailed analysis of the statistics of a local estimate of the configurational entropy and we infer an estimate of the surface tension between amorphous states, ingredients that are both at the basis of the random first-order transition theory of glass formation. Our results represent the first direct attempt to visualize and quantify the self-induced heterogeneity underpinning the thermodynamics of glass formation. They pave the way for the development of coarse-grained effective theories and for a direct assessment of the role of thermodynamics in the activated dynamics of deeply supercooled liquids.

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。

↑