Maximal Higgs bundles for adjoint forms via Cayley correspondence

Abstract

For a fixed compact Riemann surface X, of genus at least 2, we count the number of connected components of the moduli space of maximal Higgs bundles over X for the hermitian groups $PSp(2n,R)$, $PS{O}^{\ast }(2n)$, $PS{O}_0(2,n)$ and $E_6^{-14}$. Hence the same result follows for the number of connected components of the moduli space of maximal representations of ${\pi }_{1}X$ in these groups. We use the Cayley correspondence proved in [3] as our main tool.

23 pages. Minor changes. Final version, to appear in Geometriae Dedicata

References in corpus (3)

• The Hitchin-Kobayashi correspondence, Higgs pairs and surface group representations
• Topological Invariants of Anosov Representations
• Higgs bundles for the non-compact dual of the special orthogonal group