Selberg zeta functions on odd-dimensional hyperbolic manifolds of finite volume

We study Selberg zeta functions $Z(s,σ)$ associated to locally homogeneous vector bundles over the unit-sphere bundle of a complete odd-dimensional hyperbolic manifold of finite volume. We assume a certain condition on the fundamental group of the manifold. A priori, the Selberg zeta functions are defined only for s in some right half-space of $\mathbb{C}$. We will prove that for any locally homogeneous bundle the functions $Z(s,σ)$ have a meromorphic continuation to $\mathbb{C}$ and we will give a complete description of their singularities in terms of spectral data of the underlying manifold. Our work generalizes results of Bunke and Olbrich to the non-compact situation. As an application of our results one can compare the normalized Reidemeister torsions on hyperbolic 3 manifolds with cusps which were introduced by Menal-Ferrer and Porti to the corresponding regularized analytic torsions.

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