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Instantons and Wormholes In Minkowski and (A)dS Spaces

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arxiv hep-th/0206153 v3 pith:ONUUAZYW submitted 2002-06-17 hep-th gr-qc

Michael Gutperle , Wafic Sabra This is my paper · ORCID
classification hep-thgr-qc
keywords axion-dilatoncasesconstantconstructedcosmologicald-dimensionaldiscussfields
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Instanton and wormhole solutions are constructed in a d-dimensional gravity theory with an axion-dilaton pair of scalar fields. We discuss the cases of vanishing, positive and negative cosmological constant.

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Cited by 4 Pith papers

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

  1. Supergravity flows, wormholes and their pseudo-Hermitian holographic duals

    hep-th 2026-05 unverdicted novelty 6.0 of 10

    Supergravity truncations admit real-metric wormhole solutions via imaginary scalar extensions whose holographic duals are pseudo-Hermitian and PT-symmetric, interpretable as entangled brane states.

  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...

  3. Sharpening the Supersymmetric Axion Weak Gravity Conjecture

    hep-th 2026-05 unverdicted novelty 5.0 of 10

    The paper verifies the bound fS/|n| ≤ (π/(2 κ_d)) sqrt((d-1)/(d-2)) for axion instantons and sharpens it to fS/|n| ≤ (1/κ_4) sqrt(7/2) for supersymmetric 4d instantons using three approaches in the string landscape.

  4. Prepare inflationary universe via the Euclidean charged wormhole

    gr-qc 2024-11 conditional novelty 5.0 of 10

    A semiclassical Euclidean charged wormhole with an anti-de Sitter boundary can, in a fine-tuned potential, assign higher probability to a longer inflationary period, but it does not beat the Hartle-Hawking no-boundary state.

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