The problem of uniqueness in the reduced description of adsorption on the wedge-shaped substrate
Adam Bednorz, M Napiórkowski · Journal of Physics A Mathematical and General · 2000
In the reduced one-dimensional description of the adsorption on the wedge-shaped substrate the mid-point interface height serves as the order parameter. We point out the ambiguity which appears in the transfer-matrix approach to this problem. We also propose how to avoid this problem by introducing the appropriate order parameter.