Pith. sign in

REVIEW 5 cited by

Complex Saddles and Euclidean Wormholes in the Lorentzian Path Integral

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2203.01956 v2 pith:EGTCS6EF submitted 2022-03-03 hep-th gr-qc

Gregory J. Loges , Gary Shiu , Nidhi Sudhir This is my paper · ORCID
classification hep-thgr-qc
keywords integralpatheuclideanlorentziansaddlescomplexformgiddings-strominger
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
read the original abstract

We study complex saddles of the Lorentzian path integral for 4D axion gravity and its dual description in terms of a 3-form flux, which include the Giddings-Strominger Euclidean wormhole. Transition amplitudes are computed using the Lorentzian path integral and with the help of Picard-Lefschetz theory. The number and nature of saddles is shown to qualitatively change in the presence of a bilocal operator that could arise, for example, as a result of considering higher-topology transitions. We also analyze the stability of the Giddings-Strominger wormhole in the 3-form picture, where we find that it represents a perturbatively stable Euclidean saddle of the gravitational path integral. This calls into question the ultimate fate of such solutions in an ultraviolet-complete theory of quantum gravity.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 5 Pith papers

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

  1. Selecting Complex Extremal Surfaces with the Kontsevich--Segal--Witten Criterion

    hep-th 2026-07 conditional novelty 7.0 of 10

    In AdS3, dS3, and AdS4 hyperbolic examples, the Kontsevich-Segal-Witten criterion uniquely selects a three-piece complex contour for timelike extremal surfaces, while timelike strips in AdS4 violate the criterion near...

  2. 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.

  3. Domain Walls From Confining Bubbles: $SU(N_{c})$ Yang Mills at Finite $\theta$

    hep-ph 2026-07 conditional novelty 6.0 of 10

    A nonzero theta angle weakens supercooling in SU(Nc) Yang-Mills confinement and makes any resulting domain-wall gravitational-wave signal invisible except under severe fine-tuning.

  4. Non-invertible symmetries in the axiverse, and the imaginary wormholes

    hep-th 2026-06 unverdicted novelty 6.0 of 10

    Imaginary wormholes and the IDB imply that towers of BPS EFT instantons generate infinitely many superpotential terms that break non-invertible axion shift symmetries in N=1 axiverse models.

  5. 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...

Pith tools