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Symmetry breaking surface fields give rise to nontrivial and long-ranged order parameter profiles for critical systems such as fluids, alloys, or magnets confined to wedges. We discuss the properties of the corresponding universal scaling functions of the order parameter profile and the two-point correlation function, and determine the critical exponents eta(parallel) and eta( perpendicular) for the so-called normal transition.
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Hanke et al. (1999) studied this question.
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