Volume 80, Number 6, December 2007
|Number of page(s)||6|
|Published online||19 November 2007|
Monte Carlo simulation results for critical Casimir forces
Max-Planck-Institut für Metallforschung - Heisenbergstr. 3, 70569 Stuttgart, Germany
2 Institut für Theoretische und Angewandte Physik, Universität Stuttgart - Pfaffenwaldring 57, 70569 Stuttgart, Germany
3 Institute of Physical Chemistry, Polish Academy of Sciences - Kasprzaka 44/52, 01-224 Warsaw, Poland
Accepted: 23 October 2007
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 agree well with corresponding experimental results for wetting layers of classical binary liquid mixtures and of 4He, respectively.
PACS: 05.70.Jk – Critical point phenomena / 05.10.Ln – Monte Carlo methods / 68.15.+e – Liquid thin films
© EPLA, 2007
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