Abstract
We study the dynamics of translational and rotational diffusion during the ageingof a colloidal glass of Laponite using polarized and depolarized dynamic lightscattering. The dynamics are qualitatively similar between the two degrees of freedom.The short-time diffusion is independent of the time elapsed since the samplepreparation. The intermediate- and long-time diffusion, on the other hand, slowsdown by several orders of magnitude during the ageing. The slowing down of therotational diffusion is found to be much faster than that of the translational diffusion.
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