School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom.
Phys Rev Lett. 2018 Jun 1;120(22):225501. doi: 10.1103/PhysRevLett.120.225501.
The Gardner transition is the transition that at mean-field level separates a stable glass phase from a marginally stable phase. This transition has similarities with the de Almeida-Thouless transition of spin glasses. We have studied a well-understood problem, that of disks moving in a narrow channel, which shows many features usually associated with the Gardner transition. We show that some of these features are artifacts that arise when a disk escapes its local cage during the quench to higher densities. There is evidence that the Gardner transition becomes an avoided transition, in that the correlation length becomes quite large, of order 15 particle diameters, even in our quasi-one-dimensional system.
加德纳转变是指在平均场水平上将稳定玻璃相和亚稳相分离的转变。该转变与自旋玻璃的德阿尔梅达-图利尔转变具有相似性。我们研究了一个被很好理解的问题，即磁盘在狭窄通道中的运动问题，该问题显示出许多通常与加德纳转变相关的特征。我们表明，这些特征中的一些是由于磁盘在淬火到较高密度时从局部笼中逃逸而产生的伪影。有证据表明，加德纳转变成为了一种避免转变，因为关联长度变得相当大，大约为 15 个粒子直径，即使在我们的准一维系统中也是如此。
