On an elliptic system with symmetric potential possessing two global minima

Details On an elliptic system with symmetric potential possessing two global minima On an elliptic system with symmetric potential possessing two global minima

2008-10-28

arxiv.org/abs/0810.5009v2

Mathematics

Analysis of PDEs

19 pages, 5 figures; major revision

Scientific paper

We consider the system {\Delta}u - W_u (u) = 0, for u: R^2 -> R^2, W: R^2 -> R, where W_u (u) is a smooth potential, symmetric with respect to the u_1, u_2 axes, possessing two global minima a^\pm := (\pma,0) and two connections e^\pm(x_1) connecting the minima. We prove that there exists an equivariant solution u(x_1, x_2) satisfying u(x_1, x_2) -> a^\pm, as x_1 -> \pminfiniti, and u(x_1, x_2) -> e^\pm(x_1), as x_2 -> \pminfiniti. The problem above was first studied by Alama, Bronsard, and Gui under related hypotheses to the ones introduced in the present paper. At the expense of one extra symmetry assumption, we avoid their considerations with the normalized energy and strengthen their result. We also provide examples for W.

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