Unbinding transition of flexible Gaussian polymers in two dimensions [Letter to the editor]

Abstract

The unbinding of Gaussian polymers with bending energy and external tension parallel to the wall is studied by scaling arguments and transfer matrix methods in two spatial dimensions. Unbinding transitions occur as the strength of the wall potential or the external tension is varied. Three different scaling regimes can be distinguished: (i) a stiff-rod regime; (ii) a semi-flexible regime; and (iii) a crumpled regime. Scaling functions are calculated numerically for the crossover behaviour.