A note on the metastability of the Ising model: the alternate updating   case
  We study the metastable behavior of the two-dimensional Ising model in the case of an alternate updating rule: parallel updating of spins on the even (odd) sublattice are permitted at even (odd) times. We show that although the dynamics is different from the Glauber serial case the typical exit path from the metastable phase remains the same. 
Emilio N. M. Cirillo
cond-mat.stat-mech