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A perturbative perspective on self-supporting wormholes

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arxiv 1807.07917 v3 pith:ELORZFZZ submitted 2018-07-20 hep-th gr-qc

Zicao Fu , Brianna Grado-White , Donald Marolf This is my paper · ORCID
classification hep-thgr-qc
keywords asymptoticallytraversableboundaryexampleswormholesclassconditionsdetail
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abstract

We describe a class of wormholes that generically become traversable after incorporating gravitational back-reaction from linear quantum fields satisfying appropriate (periodic or anti-periodic) boundary conditions around a non-contractible cycle, but with natural boundary conditions at infinity (i.e., without additional boundary interactions). The class includes both asymptotically flat and asymptotically AdS examples. Simple asymptotically AdS$_3$ or asymptotically AdS$_3 \times S^1$ examples with a single periodic scalar field are then studied in detail. When the examples admit a smooth extremal limit, our perturbative analysis indicates the back-reacted wormhole remains traversable at later and later times as this limit is approached. This suggests that a fully non-perturbative treatment would find a self-supporting eternal traversable wormhole. While the general case remains to be analyzed in detail, the likely relation of the above effect to other known instabilities of extreme black holes may make the construction of eternal traversable wormholes more straightforward than previously expected.

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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. The Speed of Quantum Information Spreading in Chaotic Systems

    cond-mat.stat-mech 2019-08 conditional novelty 7.0 of 10

    For chaotic systems with initial entanglement fraction f, quantum information spreads at speed v_E(f)/(1-f), interpolating between the entanglement speed at f=0 and the butterfly speed at f=1.

  2. Chaos in the butterfly cone

    hep-th 2019-08 conditional novelty 7.0 of 10

    The velocity-dependent Lyapunov exponent inside the butterfly cone satisfies λ(v) ≤ 2πT(1-|v|/v_B), a generalization of the chaos bound, saturated in SYK chains, holographic theories, and large N CFTs.

  3. Simple Perturbatively Traversable Wormholes from Bulk Fermions

    hep-th 2019-08 conditional novelty 6.0 of 10

    A Weyl fermion's quantum stress-energy on a Z2 quotient of rotating BTZ times a circle gives a negative averaged null energy, making the wormhole traversable.

  4. Traversable Asymptotically Flat Wormholes with Short Transit Times

    hep-th 2019-08 conditional novelty 6.0 of 10

    Quantum back-reaction from cosmic-string fluctuations can make a non-extremal charged wormhole traversable for early signals, with transit time d plus logarithmic terms, approaching the minimum allowed in higher dimensions.

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