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- W2953770704 abstract "In this work we recover the Oseen-Frank theory of nematic liquid crystals as a $Gamma$-limit of a particular mean-field free energy as the sample size becomes infinitely large. The Frank constants are not necessarily all equal. Our analysis takes place in a broader framework however, also providing results for more general systems such as biaxial or polar molecules. We start from a mesoscopic model describing a competition between entropy and a non-local pairwise interactions between molecules. We assume the interaction potential is separable so that the energy can be reduced to a model involving a macroscopic order parameter. We assume only integrability and decay properties of the macroscopic interaction, but no regularity assumptions are required. In particular, singular interactions are permitted. The analysis becomes significantly simpler on a translationally invariant domain, so we first consider periodic domains with increasing domain of periodicity. Then we tackle the problem on a Lipschitz domain with non-local boundary conditions by considering an asymptotically equivalent problem on periodic domains. We conclude by applying the results to a case which reduces to the Oseen-Frank model of elasticity, and give expressions for the Frank constants in terms of integrals of the interaction kernel." @default.
- W2953770704 created "2019-07-12" @default.
- W2953770704 creator A5065057468 @default.
- W2953770704 date "2017-03-20" @default.
- W2953770704 modified "2023-09-27" @default.
- W2953770704 title "Oseen-Frank-type theories of ordered media as the $Gamma$-limit of a non-local mean-field free energy" @default.
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