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We present simulation results for the dynamics of a schematic model based onthe frustration-limited domain picture of glass-forming liquids. These resultsare compared with approximate theoretical predictions analogous to thosecommonly used for supercooled liquid dynamics. Although model relaxation timesincrease by several orders of magnitude in a non-Arrhenius manner as amicrophase separation transition is approached, the slow relaxation is in manyways dissimilar to that of a liquid. In particular, structural relaxation isnearly exponential in time at each wave vector, indicating that the modecoupling effects dominating liquid relaxation are comparatively weak withinthis model. Relaxation properties of the model are instead well reproduced bythe simplest dynamical extension of a static Hartree approximation. Thisapproach is qualitatively accurate even for temperatures at which the modecoupling approximation predicts loss of ergodicity. These results suggest thatthe thermodynamically disordered phase of such a minimal model poorlycaricatures the slow dynamics of a liquid near its glass transition

Nature of slow dynamics in a minimal model of frustration-limited domains