Multicanonical Monte Carlo simulation of a polymer with stickers

We study the temperature dependence of the behavior of a polymer chain with stickers by using multicanonical Monte Carlo simulations. For our two-dimensional model, we performed equilibrium calculations and obtained physical quantities at low temperatures. We calculated the radius of gyration and the end-to-end distance and found that those quantities drastically change between the temperature kT/u(0) = 0.1 and 0.2. As the temperature is lowered, the value of the exponent nu becomes slightly smaller than the high temperature case. We also investigated the distribution of gyration radius and winding angle.