Layer Potential Methods for Elliptic Homogenization Problems

Details Layer Potential Methods for Elliptic Homogenization Problems Layer Potential Methods for Elliptic Homogenization Problems

2009-10-21

arxiv.org/abs/0910.4169v1

Mathematics

Analysis of PDEs

Scientific paper

In this paper we use the method of layer potentials to study $L^2$ boundary value problems in a bounded Lipschitz domain $\Omega$ for a family of second order elliptic systems with rapidly oscillating periodic coefficients, arising in the theory of homogenization. Let $\mathcal{L}_\varepsilon=-\text{div}\big(A(\varepsilon^{-1}X)\nabla \big)$. Under the assumption that $A(X)$ is elliptic, symmetric, periodic and H\"older continuous, we establish the solvability of the $L^2$ Dirichlet, regularity, and Neumann problems for $\mathcal{L}_\varepsilon (u_\varepsilon)=0$ in $\Omega$ with optimal estimates uniform in $\varepsilon>0$.

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