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Cassie's Law and Concavity of Wall Tension with Respect to Disorder
Authors:François Dunlop  Krzysztof Topolski
Affiliation:(1) Laboratoire de Physique Théorique et Modélisation (CNRS-ESA 8089), Université de Cergy-Pontoise, 95031 Cergy-Pontoise, France;(2) Mathematical Institute, University of Wroc"lstrok"aw, 50384 Wroc"lstrok"aw, Poland
Abstract:For the semiinfinite Ising model with quenched boundary disorder, we prove concavity inequalities for the difference of wall tensions associated with the minus and plus phases. These inequalities generalize phenomenological equalitiesknown as Cassie's law.
Keywords:Ising model  correlation inequalities  surface tension  disorder
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