FINITE-SIZE EFFECTS ON CRITICAL WETTING IN 1+1 DIMENSIONS

Simulations of critical or near-critical wetting in 2+1 dimensions exh ibit strong finite-size effects. Both the size of the area of the subs trate from which the interface unbinds and the presence of a second su bstrate to contain the unbound interface, influence the apparent locat ion and order of the transition. These two influences are studied anal ytically in a continuum version of the SOS model in 1+1 dimensions. Fi nite-size scaling functions qualitatively show the behavior observed i n the simulations and implications for the latter are discussed.