Low-temperature universal dynamics of the bidimensional Potts model in the large q limit

We study the low temperature quench dynamics of two-dimensional Potts model in limit large number states, q >> 1. identify a q-independent crossover (the pseudo spinodal) below which no high-temperature metastability stops curvature driven coarsening process. At short length scales, latter is decorated by freezing for some lattice geometries, notably square one. With simple analytic arguments we evaluate relevant time-scale regime, turns out to be Arrhenius form and independent q. Once taken into account dynamic scaling universal.