  Molecular anisotropy plays an important role in the glass transition of a
liquid. Recently, a novel bulk glass state has been discovered by optical
microscopy experiments on suspensions of ellipsoidal colloids. 'Liquid glass'
is a disordered analog of a nematic liquid crystal, in which rotation motion is
hindered but particles diffuse freely. Global nematic order is suppressed as
clusters of aligned particles intertwine. We perform Brownian dynamics
simulations to test the structure and dynamics of a dense system of soft
ellipsoidal particles. As seen in experiments and in accordance with
predictions from mode coupling theory, on the time scale of our simulations
rotation motion is frozen but translation motion persists in liquid glass.
Analyses of the dynamic structure functions for translation and rotation
corroborates the presence of two separate glass transitions for rotation and
translation, respectively. Even though the equilibrium state should be a
nematic, aligned structures remain small and orientational order rapidly decays
with increasing size. Long-wavelength fluctuations are remnants of the
isotropic-nematic transition.
