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  Four-dimensional Traversable Wormholes and Bouncing Cosmologies in Vacuum

Anabalon, A., & Oliva, J. (2019). Four-dimensional Traversable Wormholes and Bouncing Cosmologies in Vacuum. Journal of High Energy Physics, 2019(4): 106. doi:10.1007/JHEP04(2019)106.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-8101-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-8108-2
Genre: Journal Article

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 Creators:
Anabalon, Andres1, Author              
Oliva, Julio, Author
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1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24014              

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Free keywords: High Energy Physics - Theory, hep-th,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc
 Abstract: In this letter we point out the existence of solutions to General Relativity with a negative cosmological constant in four dimensions, which contain solitons as well as traversable wormholes. The latter connect two asymptotically locally AdS$_{4}$ spacetimes. At every constant value of the radial coordinate the spacetime is a spacelike warped AdS$_{3}$. We compute the dual energy momentum tensor at each boundary showing that it yields different results. We also show that these vacuum wormholes can have more than one throat and that they are indeed traversable by computing the time it takes for a light signal to go from one boundary to the other, as seen by a geodesic observer. We generalize the wormholes to include rotation and charge. When the cosmological constant is positive we find a cosmology that is everywhere regular, has either one or two bounces and that for late and early times matches the Friedmann-Lema\^{\i}tre-Robertson-Walker metric with spherical topology.

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 Dates: 2018-11-082019
 Publication Status: Published in print
 Pages: 12 pages, 2 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1811.03497
URI: http://arxiv.org/abs/1811.03497
DOI: 10.1007/JHEP04(2019)106
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2019 (4) Sequence Number: 106 Start / End Page: - Identifier: -