  This letter describes a novel approach for determining the surface tension of
a model system that is applicable over the entire liquid-vapor coexistence
region. At the heart of the method is a new technique for determining
coexistence properties that utilizes transition probabilities of attempted
Monte Carlo moves during a grand canonical simulation. Finite-size scaling
techniques are implemented to determine the infinite system surface tension
from a series of finite-size simulations. To demonstrate the new method, the
surface tension of the Lennard-Jones fluid is determined at temperatures
ranging from the triple point to the critical point.
