Determination of the correlation length from short-time dynamics
arXiv:cond-mat/9812009 · doi:10.1016/S0375-9601(99)00348-5
Abstract
We investigate the short-time dynamic relaxation of the two-dimensional XY model in the high temperature phase. Starting from the ordered state, we measure the autocorrelation function and determine the autocorrelation time. It is shown that apart from a constant the equilibrium spatial correlation length can be calculated in this way.
8 pages, 5 figures