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arXiv · 2405.02072

Stability of Axion-Saxion wormholes

T. Hertog·S. Maenaut·B. Missoni·R. Tielemans·T. Van Riet
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Abstract

We reconsider the perturbative stability of Euclidean axion wormholes. The quadratic action that governs linear perturbations is derived directly in Euclidean gravity. We demonstrate explicitly that a stability analysis in which one treats the axion as a normal two-form gauge field is equivalent to one performed in the Hodge-dual formulation, where one considers the axion as a scalar with a wrong-sign kinetic term. Both analyses indicate that axion wormholes are perturbatively stable, even in the presence of a massless dilaton, or saxion, field that couples to the axion.

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T. Hertog, S. Maenaut, B. Missoni, R. Tielemans, T. Van Riet. 2024-05-03. Stability of Axion-Saxion wormholes. https://arxiv.org/abs/2405.02072

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