Chinese Academic of Sciences Key Laboratory for Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China.
Department of Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China.
Proc Natl Acad Sci U S A. 2023 Jun 27;120(26):e2218218120. doi: 10.1073/pnas.2218218120. Epub 2023 Jun 20.
The criticality of the jamming transition responsible for amorphous solidification has been theoretically linked to the marginal stability of a thermodynamic Gardner phase. While the critical exponents of jamming appear independent of the preparation history, the pertinence of Gardner physics far from equilibrium is an open question. To fill this gap, we numerically study the nonequilibrium dynamics of hard disks compressed toward the jamming transition using a broad variety of protocols. We show that dynamic signatures of Gardner physics can be disentangled from the aging relaxation dynamics. We thus define a generic dynamic Gardner cross-over regardless of the history. Our results show that the jamming transition is always accessed by exploring increasingly complex landscape, resulting in anomalous microscopic relaxation dynamics that remains to be understood theoretically.
负责非晶态固化的阻碍转变的关键性已在理论上与热力学 Gardner 相的边缘稳定性联系起来。虽然阻碍的临界指数似乎与制备历史无关，但 Gardner 物理学在远离平衡时的相关性仍是一个悬而未决的问题。为了填补这一空白，我们使用多种方案数值研究了硬磁盘在接近阻碍转变时的非平衡动力学。我们表明，可以将 Gardner 物理的动态特征与老化松弛动力学区分开来。因此，我们定义了一个通用的动态 Gardner 交叉，而不考虑历史。我们的结果表明，阻碍转变总是通过探索越来越复杂的景观来实现，导致微观松弛动力学异常，这在理论上仍有待理解。
