Aging in thermal active glasses

It is well established that glassy materials can undergo aging, i.e., their properties gradually change over time. There rapidly growing evidence dense active and living systems also exhibit many features of behavior, but it still largely unknown how physical aging manifested in such materials. Our goal to explore whether passive thermal glasses age fundamentally different ways. To address this, we numerically study the dynamics following a quench from high low temperature for two-dimensional Brownian model glass-formers. We find governed by time-dependent competition between effects, with an effective explicitly evolves material. Moreover, unlike phenomenology, degree dynamic heterogeneity relatively small remarkably constant age. conclude often-invoked mapping system one higher rigorously breaks down upon differs several distinct ways both athermal case.