A new proof for the existence of an equivariant entire solution connecting the minima of the potential for the system Δu - W_u (u) = 0

Details A new proof for the existence of an equivariant entire solution connecting the minima of the potential for the system Δu - W_u (u) = 0 A new proof for the existence of an equivariant entire solution connecting the minima of the potential for the system Δu - W_u (u) = 0

2011-06-05

arxiv.org/abs/1106.0919v1

Mathematics

Analysis of PDEs

18 pages

Scientific paper

Recently, Giorgio Fusco and the author studied the system {\Delta}u - W_u (u) = 0 for a class of potentials that possess several global minima and are invariant under a general finite reflection group, and established existence of equivariant solutions connecting the minima in certain directions at infinity, together with an estimate. In this paper a new proof is given which, in particular, avoids the introduction of a pointwise constraint in the minimization process.

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