A new proof for the existence of an equivariant entire solution   connecting the minima of the potential for the system {\Delta}u - W_u (u) = 0
  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. 
Nicholas D. Alikakos
math.AP