Einstein-Hilbert Path Integrals and Chern-Simons Integrals

Abstract

A hyperlink is a finite set of non-intersecting simple closed curves in $\mathbb{R}\times {\mathbb{R}}^3$. We compute the Wilson Loop observable using a path integral with an Einstein-Hilbert action. Using axial-gauge fixing, we can write this path integral as the limit of a sequence of Chern-Simons integrals, studied earlier in our previous work on the Chern-Simons path integrals in ${\mathbb{R}}^3$. We will show that the Wilson Loop observable can be computed from a link diagram of a hyperlink, projected on a plane. Only crossings in the diagram will contribute to the path integral. Furthermore, we will show that it is invariant under an equivalence relation defined on the set of hyperlinks.

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