State integrals for the quantized $\operatorname{SL}_2(\mathbb{C})$ Chern-Simons invariant

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Authors: Calvin McPhail-Snyder
Cited by: 0

Abstract

Previous work of the author and N. Reshetikhin defines an invariant $\operatorname{Z}_{N}^ψ(K, ρ, μ)$ of a knot $K$, a representation $ρ: π_{1}(S^{3} \setminus K) \to \operatorname{SL}_2(\mathbb{C})$, and a logarithm $μ$ of a meridian eigenvalue of $ρ$. It can be interpreted as a geometric twist of the Kasahev invariant or as a quantization of the $\operatorname{SL}(\mathbb{C})$ Chern-Simons invariant and is defined using a discrete state-sum involving quantum dilogarithms. In this paper we show how to express $\operatorname{Z}_{N}^ψ(K, ρ, μ)$ as a sum over contour integrals in a space parametrizing hyperbolic structures on the knot complement. Such integral presentations are an important step in determining the asymptotics of quantum invariants as predicted by the Volume Conjecture. We discuss this perspective and the remaining obstacles to establishing exponential growth of $\operatorname{Z}_{N}^ψ$.

Fields of Study & Subjects

Geometric and Algebraic Topology Algebraic structures and combinatorial models Advanced Operator Algebra Research

Publication details

Journal / source
arXiv (Cornell University)
Publication date
8 January 2026
Document type
Preprint