Moduli Spaces of Representations of Knot and Prime Groups

In view of the analogy between a knot group \(G_{K} = \pi _{1}(S^{3}\setminus K)\) and a prime group \(G_{\{p\}} = \pi _{1}(\mathrm {Spec}(\mathbb {Z}) \setminus \{p\})\) , we expect some analogies between the moduli spaces of representations of knot and prime groups.