The Magnetization of the 3D Ising Model

Details The Magnetization of the 3D Ising Model The Magnetization of the 3D Ising Model

1996-03-02

arxiv.org/abs/cond-mat/9603013v1

J.Phys.A29:5727-5734,1996

Physics

Condensed Matter

7 pages, 5 Postscript figures

Scientific paper

10.1088/0305-4470/29/17/042

We present highly accurate Monte Carlo results for simple cubic Ising lattices containing up to $256^3$ spins. These results were obtained by means of the Cluster Processor, a newly built special-purpose computer for the Wolff cluster simulation of the 3D Ising model. We find that the magnetization $M(t)$ is perfectly described by $M(t)=(a_0-a_1 t^{\theta} - a_2 t) t^{\beta} $, where $t=(T_{\rm c}-T)/T_{\rm c}$, in a wide temperature range $0.0005 < t < 0.26 $. If there exist corrections to scaling with higher powers of $t$, they are very small. The magnetization exponent is determined as $\beta=0.3269$ (6). An analysis of the magnetization distribution near criticality yields a new determination of the critical point: $K_{\rm c}=J/k_B T_{\rm c}=0.2216544$, with a standard deviation of $3\cdot 10^{-7}$.

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