A Determination of Interface Free Energies
نویسندگان
چکیده
We determine the interface free energy Fo.d. between disordered and ordered phases in the q=10 and q=20 2-d Potts models using the results of multicanonical Monte Carlo simulations on L lattices, and suitable finite volume estimators. Our results, when extrapolated to the infinite volume limit, agree to high precision with recent analytical calculations. At the transition point βt the probability distribution function of the energy exhibits two maxima. Their locations have 1/L corrections, in contradiction with claims of 1/L behavior made in the literature. Our data show a flat region inbetween the two maxima which characterizes two domain configurations.
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