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Euclidean axion wormholes have multiple negative modes

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arxiv 1811.12690 v2 pith:MH3ZOEEZ submitted 2018-11-30 hep-th gr-qc

Thomas Hertog , Brecht Truijen , Thomas Van Riet This is my paper · ORCID
classification hep-thgr-qc
keywords wormholesaxionactioneuclideangravitylowernegativeperturbations
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We show that Euclidean axion wormholes in theories of gravity coupled to a single axion have several independent inhomogeneous perturbations that lower the Euclidean action. Our analysis relies on a judiciously chosen gauge-invariant variable which makes the negative mode structure about axion wormholes transparent. Perturbations lowering the action are concentrated in the neck region and exist for wormholes in flat space and in AdS. Their presence means axion wormholes are not relevant saddle points of the functional integral in quantum gravity. This resolves the paradoxes associated with these solutions from the viewpoint of AdS/CFT. We conjecture that the lower action configurations one flows to are ensembles of microscopic `quantum wormholes' with unit charge.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Wormholes and the imaginary distance bound

    hep-th 2026-05 unverdicted novelty 7.0 of 10

    Wormhole solutions with imaginary scalars set an Imaginary Distance Bound on analytic continuation of couplings, enforced by stringy effects that coincide with WGC and KSW in special cases.

  2. Euclidean wormholes stability analysis revisited

    hep-th 2025-05 conditional novelty 6.0 of 10

    Even-parity perturbations of Euclidean axion wormholes have finite, positive quadratic actions when the constraint equations are solved differently, so prior exclusions of these modes were artifacts and the known stab...

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