2019_EJRNL_PP_QINYI_LIAO_1.pdf
Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
We numerically analyze the landscape governing the evolution of the vibrational dynamics of hard
disk glasses as the density increases towards jamming. We find that the dynamics becomes slow, spatially
correlated, and starts to display aging dynamics across an avoided Gardner transition, with a
phenomenology that resembles three-dimensional observations. We carefully analyze the behavior of
single glass samples, and find that the emergence of aging dynamics is controlled by the apparition of a
complex organization of the landscape that splits into a remarkable hierarchy of minima as jamming is
approached. Our results show that the mean-field prediction of a Gardner phase characterized by an
ultrametric structure of the landscape provides a useful description of finite-dimensional systems, even
when the Gardner transition is avoided.