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The real locus of an involution map on the moduli space of flat connections on a Riemann surface

Nan-Kuo Ho
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Abstract

It is known that every nonorientable surface $Σ$ has an orientable double cover $\tildeΣ$. The covering map induces an involution on the moduli space $\tilde{\M}$ of gauge equivalence classes of flat $G$-connections on $\tildeΣ$. We identify the relation between the moduli space $\M$ and the fixed point set of the moduli space $\tilde{\M}$. In particular, $\M$ is isomorphic to the fixed point set of $\tilde{\M}$ if and only if the order of the center of $G$ is odd. One important application is that we give a way to construct a minimal Lagrangian submanifold of the moduli space $\tilde{\M}$.

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Nan-Kuo Ho. 2006-05-23. The real locus of an involution map on the moduli space of flat connections on a Riemann surface. https://arxiv.org/abs/math/0312426

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