SU(2)^2xU(1)-invariant G_2-instantons on the AC limit of the C7 family

Abstract

We construct SU(2)^2xU(1)-invariant G_2-instantons on the asymptotically conical limit of the C7 family of G_2-metrics. The construction uses a dynamical systems approach involving perturbations of an abelian solution and a solution on the G_2-cone. From this we obtain a 1-parameter family of invariant instantons with gauge group SU(2) and bounded curvature.

Presentational revisions for clarity, including new figures; minor errors fixed; 28 pages, 6 figures, 1 table