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arXiv 1007.0592cond-mat.stat-mech
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有限大小平均场系统的短时动力学

Short-time dynamics of finite-size mean-field systems

Celia Anteneodo, Ezequiel E. Ferrero, Sergio A. Cannas

摘要:

通过求解相应的Fokker-Planck方程,研究了具有非守恒序参量的平均场模型(Curie-Weiss with Glauber动力学)的短时动力学.我们得到封闭形式的表达式的序参量的一阶矩,附近的临界点和旋节点,从不同的初始条件。这使我们能够确认在这两种情况下的短时间动态标度假设的有效性。虽然该过程是针对一个特定的平均场模型,我们的结果可以直接扩展到通用模型与一个单一的序参量。

英文摘要:

We study the short-time dynamics of a mean-field model with non-conserved order parameter (Curie-Weiss with Glauber dynamics) by solving the associated Fokker-Planck equation. We obtain closed-form expressions for the first moments of the order parameter, near to both the critical and spinodal points, starting from different initial conditions. This allows us to confirm the validity of the short-time dynamical scaling hypothesis in both cases. Although the procedure is illustrated for a particular mean-field model, our results can be straightforwardly extended to generic models with a single order parameter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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