Falling into the Past: Geodesics in a Time Travel Metric

Autor: Colin MacLaurin, Fabio Costa, Timothy C. Ralph
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Universe, Vol 10, Iss 2, p 95 (2024)
Druh dokumentu: article
ISSN: 2218-1997
DOI: 10.3390/universe10020095
Popis: We investigate timelike and null geodesics within the rotating “time machine” spacetime proposed by Ralph, T.C.; et al. Phys. Rev. D 2020, 102, 124013. This is a rotating analogue of Alcubierre’s warp drive spacetime. We obtain geodesics that begin and end in the surrounding flat space region, yet achieve time travel relative to static observers there. This is a global property, as the geodesics remain locally future-pointing, as well as timelike or null.
Databáze: Directory of Open Access Journals
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