Berlin 2008 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 1: Critical phenomena and phase transitions
DY 1.1: Hauptvortrag
Montag, 25. Februar 2008, 10:00–10:30, MA 004
The Thermodynamic Casimir Effect: Monte Carlo Results — •Alfred Hucht — Theoretische Physik, Universität Duisburg-Essen, 47048 Duisburg
The thermodynamic Casimir effect describes a force between the boundaries of thin films mediated through long-range fluctuations of the order parameter near a continuous phase transition. This force is universal for a given universality class and boundary condition, and can be attractive or repulsive.
The universal finite size scaling function of the critical Casimir force for the three dimensional XY and Ising universality class with different boundary conditions is determined using Monte Carlo simulations [1]. The results are in excellent agreement with recent experiments on 4He Films at the superfluid transition [2] and with experiments on binary liquid mixtures [3].
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R. Garcia and M. H. W. Chan, Phys. Rev. Lett. 83, 1187 (1999).
M. Fukuto et al., Phys. Rev. Lett. 94, 135702 (2005).