A Topological Drive for Spacetime Travel
General Relativity and Quantum Cosmology
2024-06-17 v2
Abstract
We present a toy metric of spacetime travel from topological change. A bubble-like baby universe is detached and re-attached from our universe. Depending on where the bubble is re-attached, matter may travel superluminally or backwards-in-time through the bubble. Quasiregular singularities are formed at the detachment and re-attachment spacetime points. The spacetime is traversable and not covered by any horizons. Exotic matter violating energy conditions is required to realize such spacetimes.
Keywords
Cite
@article{arxiv.2401.11109,
title = {A Topological Drive for Spacetime Travel},
author = {Tingqi Cai and Yi Wang},
journal= {arXiv preprint arXiv:2401.11109},
year = {2024}
}