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Multi-mouth traversable wormholes

Journal of High Energy Physics volume 2021, Article number: 32 (2021) Cite this article

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Abstract

We describe the construction of traversable wormholes with multiple mouths in four spacetime dimensions and discuss associated quantum entanglement. Our wormholes may be traversed between any pair of mouths. In particular, in the three-mouth case they have fundamental group F2 (the free group on two generators). By contrast, connecting three regions A, B, C in pairs (AB, BC, and AC) using three separate wormholes would give fundamental group F3. Our solutions are asymptotically flat up to the presence of possible magnetic fluxes or cosmic strings that extend to infinity. The construction begins with a two-mouth traversable wormhole supported by backreaction from quantum fields. Inserting a sufficiently small black hole into its throat preserves traversability between the original two mouths. This black hole is taken to be the mouth of another wormhole connecting the original throat to a new distant region of spacetime. Making the new wormhole traversable in a manner similar to the original two-mouth wormhole provides the desired causal connections. From a dual field theory point of view, when AdS asymptotics are added to our construction, multiparty entanglement may play an important role in the traversability of the resulting wormhole.

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Authors and Affiliations

  1. Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys 23, E-08010, Barcelona, Spain

    Roberto Emparan

  2. Departament de Física Quàntica i Astrofísica, Institut de Ciències del Cosmos, Universitat de Barcelona, Martí i Franquès 1, E-08028, Barcelona, Spain

    Roberto Emparan & Marija Tomašević

  3. Department of Physics, University of California, Santa Barbara, CA, 93106, USA

    Brianna Grado-White & Donald Marolf

  4. Martin Fisher School of Physics, Brandeis University, Waltham, MA, USA

    Brianna Grado-White

  5. Kavli Institute for Theoretical Physics University of California, Santa Barbara, CA, 93106, USA

    Marija Tomašević

Authors
  1. Roberto Emparan
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  2. Brianna Grado-White
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  3. Donald Marolf
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  4. Marija Tomašević
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Correspondence to Marija Tomašević.

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ArXiv ePrint: 2012.07821

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Cite this article

Emparan, R., Grado-White, B., Marolf, D. et al. Multi-mouth traversable wormholes. J. High Energ. Phys. 2021, 32 (2021). https://doi.org/10.1007/JHEP05(2021)032

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  • DOI: https://doi.org/10.1007/JHEP05(2021)032

Keywords

  • AdS-CFT Correspondence
  • Black Holes