Jc. Martinez, GAUGE-FIELDS ASSOCIATED WITH MINIMAL-SURFACES AND THEIR HOPF INVARIANTS, Journal of physics. A, mathematical and general (Print), 31(45), 1998, pp. 743-749
We study gauge fields described by an (n - 1)-form alpha in a (2n - 1)
-dimensional Riemannian manifold satisfying the equations d alpha =
0, L(X)alpha = dh. We show that minimal surfaces may be associated wit
h them that have a unique Hopf invariant. Some of these surfaces are s
table but the issue is not settled completely.