{ "id": "1301.0909", "version": "v1", "published": "2013-01-05T15:16:15.000Z", "updated": "2013-01-05T15:16:15.000Z", "title": "A Hilbert expansions method for the rigorous sharp interface limit of the generalized Cahn-Hilliard Equation", "authors": [ "D. C. Antonopoulou", "G. D. Karali", "E. Orlandi" ], "categories": [ "math.AP", "math-ph", "math.MP" ], "abstract": "We consider Cahn-Hilliard equations with external forcing terms. Energy decreasing and mass conservation might not hold. We show that level surfaces of the solutions of such generalized Cahn-Hilliard equations tend to the solutions of a moving boundary problem under the assumption that classical solutions of the latter exist. Our strategy is to construct approximate solutions of the generalized Cahn-Hilliard equation by the Hilbert expansion method used in kinetic theory and proposed for the standard Cahn-Hilliard equation, by Carlen, Carvalho and Orlandi, \\cite {CCO}. The constructed approximate solutions allow to derive rigorously the sharp interface limit of the generalized Cahn-Hilliard equations. We then estimate the difference between the true solutions and the approximate solutions by spectral analysis, as in \\cite {A-B-C}", "revisions": [ { "version": "v1", "updated": "2013-01-05T15:16:15.000Z" } ], "analyses": { "keywords": [ "rigorous sharp interface limit", "hilbert expansions method", "generalized cahn-hilliard equations tend", "construct approximate solutions" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }