Abstract
We study the thermodynamics of an exactly solvable model of a self-interacting, partially directed self-avoiding walk in two dimensions when a force is applied on one end of the chain. The critical force for the unfolding is determined exactly, as a function of the temperature, below the transition. The transition is of second order and is characterized by new critical exponents that are determined by a careful numerical analysis. The usual polymer critical index on the critical line, and another one which we call takes a nontrivial value that is numerically close to
- Received 20 January 2003
DOI:https://doi.org/10.1103/PhysRevE.67.041802
©2003 American Physical Society