Monte Carlo Simulations of Off-Lattice Polymers
  We point out that a newly introduced recursive algorithm for lattice polymers has a much wider range of applicability. In particular, we apply it to the simulation of off-lattice polymers with Lennard-Jones potentials between non-bonded monomers and either delta or harmonic potentials between bonded monomers. Our algorithm allows particularly easy calculations of the free energy, and seems in general more efficient than other existing algorithms. 
Peter Grassberger and Rainer Hegger