Phys. Rev. D 57, 4760–4766 (1998)Hyperfast travel in general relativityReceived 22 July 1997; published in the issue dated 15 April 1998 The problem is discussed of whether a traveler can reach a remote object and return sooner than a photon would when taking into account that the traveler can partly control the geometry of his world. It is argued that under some reasonable assumptions in globally hyperbolic space-times the traveler cannot hasten reaching the destination. Nevertheless, it is perhaps possible for the traveler to make an arbitrarily long round-trip within an arbitrarily short (from the point of view of a terrestrial observer) time. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.57.4760
DOI:
10.1103/PhysRevD.57.4760
PACS:
04.20.Gz, 04.20.Cv
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