Nonequilibrium relaxation of the two-dimensional Ising model: Series-expansion and Monte Carlo studies

Details Nonequilibrium relaxation of the two-dimensional Ising model: Series-expansion and Monte Carlo studies Nonequilibrium relaxation of the two-dimensional Ising model: Series-expansion and Monte Carlo studies

1997-12-17

arxiv.org/abs/cond-mat/9712198v1

Physics

Condensed Matter

Statistical Mechanics

9 pages including 2 figures

Scientific paper

10.1103/PhysRevE.57.6548

We study the critical relaxation of the two-dimensional Ising model from a fully ordered configuration by series expansion in time t and by Monte Carlo simulation. Both the magnetization (m) and energy series are obtained up to 12-th order. An accurate estimate from series analysis for the dynamical critical exponent z is difficult but compatible with 2.2. We also use Monte Carlo simulation to determine an effective exponent, z_eff(t) = - {1/8} d ln t /d ln m, directly from a ratio of three-spin correlation to m. Extrapolation to t = infinity leads to an estimate z = 2.169 +/- 0.003.

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