乱れを制御可能な系におけるガラス転移・ジャミングの研究

1.论文“揭示隐藏的结构顺序控制过冷液体中的快速和慢速玻璃态动力学”发表在Phys.Rev.X.2上。我们研究了“非晶态固体的固有结构特征”。我们引入了一个微观序参量，描述了粒子运动对无穷小热激发的敏感性，并成功地提取了明显无序的非晶结构的固有特征，揭示了非晶结构形成时非平凡自组织的特征。基于这个序参量，我们揭示了堵塞固体的边际稳定性，并进一步发现了堵塞临界性和边际稳定性之间的非平凡的相互作用。我们还揭示了量子场的标度不变性质，表明其独特的长程相关性，这是进一步证实了渗流分析。这些普遍的结构特征是由于特殊的自组织导致的机械刚性而出现的，这可以作为对无定形固体的连贯理解的一般起点。我们研究了“玻璃材料中固有态对动力学的作用”。从几何和力学两个方面阐明了固有态对于理解玻璃化转变现象的意义。

1. The paper "Revealing Hidden Structural Order Controlling Both Fast and Slow Glassy Dynamics in Supercooled Liquids" is published in Phys. Rev. X.2. We have studied "Inherent structural characteristics of amorphous solids". We introduce a microscopic order parameter Ψ characterizing the susceptibility of particle motion to infinitesimal thermal excitation, and successfully extract the inherent characteristics of apparently disordered amorphous structures and reveal the signature of nontrivial self-organization upon amorphous structure formation. Based on this order parameter, we reveal the marginal stability of jammed solids and further find a nontrivial interplay between jamming criticality and marginal stability. We also reveal the scale invariant nature of Ψ field, indicating its unique long-range correlation, which is further confirmed by percolation analysis. These universal structural features emerge as a consequence of peculiar self-organization leading to the mechanical rigidity, which may serve as a general starting point towards a coherent understanding of amorphous solids.3. We have studied "Role of inherent states for dynamics in glassy materials". From both geometric and mechanical aspects, we clarify the relevance of inherent states for the understanding of glass transition phenomenon.