Acta Physica Sinica

A numerical study on the aging of two-dimensional spin systems

Lei Xiao-wei, Bo Zheng, Ying He-Ping, (1)浙江大学浙江近代物理中心,杭州 310027; (2)重庆文理学院物理与信息工程系,重庆 402160；浙江大学浙江近代物理中心,杭州 310027

Published Jan 1, 2007• 2 citations

Abstract

With a large-scale Monte Carlo simulation, the aging of the two-dimensional dynamic Ising and XY models is numerically studied. Starting from a disordered state, the systems are quenched to critical temperature Tc and then evolve according to dynamics of model A. By calculating the autocorrelation function A(t,t′) we observe the aging phenomenon for both spin systems. Then, relatively accurate values of the dynamic critical exponent λc and z are estimated. Especially, we confirm that for the two-dimensional XY model, there is a strong logarithmic correction to scaling in the dynamic relaxation starting from a completely disordered.

DOI: 10.7498/aps.56.1713

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