  The investigation of freezing transitions of single polymers is
computationally demanding, since surface effects dominate the nucleation
process. In recent studies we have systematically shown that the freezing
properties of flexible, elastic polymers depend on the precise chain length.
Performing multicanonical Monte Carlo simulations, we faced several
computational challenges in connection with liquid-solid and solid-solid
transitions. For this reason, we developed novel methods and update strategies
to overcome the arising problems. We introduce novel Monte Carlo moves and two
extensions to the multicanonical method.
