Colloidal glasses are out-of-equilibrium in nature. When such materials are quenched from
a shear-melted state into a quiescent one, their structure freezes due to entropic caging of
the constituents. However, thermal fluctuations allow slow structural evolution, a process
known as aging, in favor of minimizing free energy. Here, we examine the rheological
signatures of aging, in a model system of nearly hard sphere colloidal glass. Subtle changes
in the linear viscoelastic properties are detected with the age of the colloidal glass where …