  We study the role of elasticity-induced facilitation on the dynamics of
glass-forming liquids by a coarse-grained two-dimensional model in which local
relaxation events, taking place by thermal activation, can trigger new
relaxations by long-range elastically-mediated interactions. By simulations and
an analytical theory, we show that the model reproduces the main salient facts
associated with dynamic heterogeneity and offers a mechanism to explain the
emergence of dynamical correlations at the glass transition. We also discuss
how it can be generalized and combined with current theories.
