Accurate estimate ofνfor the three-dimensional Ising model from a numerical measurement of its partition function

We give results from an accurate determination of the partition function of the three-dimensional Ising model on lattices of size up to ${10}^3$. We compute the two complex zeros of Z closest to the real temperature axis. From a finite-size scaling analysis of these, we get the estimates ν=0.6295(10) for the correlation-length exponent and φ=52.2(7) for the angle between the first two zeros and the real u=$e^{\mathrm{-}4\beta }$ axis.