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arXiv 0708.2902cond-mat.stat-mech
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临界Casimir力的蒙特卡罗模拟结果

Monte Carlo simulation results for critical Casimir forces

O. Vasilyev, A. Gambassi, A. Maciolek, S. Dietrich

摘要:

临界涨落在软介质中的约束引起作用在约束面上的临界Casimir力。这些力的温度和几何形状依赖性的特点是通用的标度函数。提出了一种新的方法来确定他们的薄膜通过蒙特卡罗模拟的晶格模型。该方法是基于自由能差的积分方案。我们的结果为伊辛和XY普遍性类相媲美的润湿层的经典二元液体混合物和4He,分别与相应的实验结果。

英文摘要:

The confinement of critical fluctuations in soft media induces critical Casimir forces acting on the confining surfaces. The temperature and geometry dependences of such forces are characterized by universal scaling functions. A novel approach is presented to determine them for films via Monte Carlo simulations of lattice models. The method is based on an integration scheme of free energy differences. Our results for the Ising and the XY universality class compare favourably with corresponding experimental results for wetting layers of classical binary liquid mixtures and of 4He, respectively.

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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