发帖
雷达卡
摘要翻译：
最近对纯4He和3He-4He混合物在固体衬底上完全润湿行为的实验数据表明，在热力学上分别接近λ相变和三重相变终点时，相应的薄膜厚度L发生了变化，这可以归因于临界Casimir力F_c。我们计算了代表相应普适类的模型中f_C的标度函数vartheta。对于混合物，我们的分析提供了从实验数据推导出的vartheta的丰富行为的理解，并预测了由一条临界点线连接的纯4He的三叉点和λ跃迁之间的交叉行为。实验观察到，在润湿膜内形成的“软模”相使f_C在三分点以下出现明显的最大值。在三分点附近，我们发现vartheta的主导行为对背景色散力的贡献有对数修正~L^(-3)(ln，L)^(1/2)。
---
英文标题：
《Critical Casimir Effect in superfluid wetting films》
---
作者：
A. Maciolek, A. Gambassi, and S. Dietrich
---
最新提交年份：
2007
---
分类信息：
一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
--
一级分类：Physics 物理学
二级分类：Quantum Physics 量子物理学
分类描述：Description coming soon
描述即将到来
--
---
英文摘要：
Recent experimental data for the complete wetting behavior of pure 4He and of 3He-4He mixtures exposed to solid substrates show that there is a change of the corresponding film thicknesses L upon approaching thermodynamically the lambda-transition and the tricritical end point, respectively, which can be attributed to critical Casimir forces f_C. We calculate the scaling functions vartheta of f_C within models representing the corresponding universality classes. For the mixtures our analysis provides an understanding of the rich behavior of vartheta deduced from the experimental data and predicts the crossover behavior between the tricritical point and the lambda-transition of pure 4He which are connected by a line of critical points. The formation of a 'soft-mode' phase within the wetting films gives rise to a pronounced maximum of f_C below the tricritical point as observed experimentally. Near the tricritical point we find logarithmic corrections ~L^(-3)(ln L)^(1/2) for the leading behavior of vartheta dominating the contributions from the background dispersion forces.
---
PDF链接：
https://arxiv.org/pdf/705.1064
京公网安备 11010802022788号
