Universality for 2D wedge wetting

We study 2D wedge wetting using a continuum interfacial Hamiltonian model w hich is solved by transfer-matrix methods. For arbitrary binding potentials ,:we ale able to exactly calculate the wedge free energy and interface heig ht distribution function and;:thus, can completely classify all types of cr itical behavior. We show that critical filling is characterized by strongly universal fluctuation dominated critical exponents, while complete filling is determined by the geometry rather than fluctuation effects. Related phe nomena for interface depinning from defect lines in the bulk are also consi dered.