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Exotic components of $\mathrm{SO}(p,q)$ surface group representations, and their Higgs bundle avatars. (arXiv:1801.08561v1 [math.AG])
来源于:arXiv
For semisimple Lie groups, moduli spaces of Higgs bundles on a Riemann
surface correspond to representation varieties for the surface fundamental
group. In many cases, natural topological invariants label connected components
of the moduli spaces. Hitchin representations into split real forms, and
maximal representations into Hermitian Lie groups, are the only previously know
cases where natural invariants do not fully distinguish connected components.
In this note we announce the existence of new such exotic components in the
moduli spaces for the groups $\mathrm{SO}(p,q)$ with $2<p<q$. These groups lie
outside formerly know classes of groups associated with exotic components. 查看全文>>