2008/06/28 by H. Lü, H. Lu, Jianwei Mei · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Noncommutative and Quantum Gravity Theories #gr-qc #hep-th
paper · pdf · doi:10.1016/j.physletb.2008.07.100
published as Phys.Lett.B666:511-516,2008 · Latex, 15 pages, reorganisation of sections, expanded discussion on accelerated time trajectories and on charged wormholes, references added
arxiv created 2008/06/28 · openalex publication_date 2008/08/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02
We construct stationary Ricci-flat inter-universe Lorentzian wormhole solutions in all D⩾5 dimensions that connect two flat asymptotic spacetimes. Such a solution can be viewed as the gravity dual of a string tachyon state whose linear momentum is larger than its tension. We focus our analysis on the D=5 wormholes which are not traversable for the timelike and null geodesics; however, we demonstrate that there exist accelerated timelike trajectories that traverse from one asymptotic region to the other. We further study the minimally-coupled scalar wave equation and demonstrate that the quantum tunnelling between two worlds must occur. We also obtain charged wormholes in five-dimensional supergravities. With appropriate choice of parameters, these wormholes connect AdS3×S2 in one asymptotic region to flat Minkowskian spacetime in the other.