LETTER TO THE EDITOR

The warp drive: hyper-fast travel within general relativity

Published under licence by IOP Publishing Ltd
, , Citation Miguel Alcubierre 1994 Class. Quantum Grav. 11 L73 DOI 10.1088/0264-9381/11/5/001

0264-9381/11/5/L73

Abstract

It is shown how, within the framework of general relativity and without the introduction of wormholes, it is possible to modify a spacetime in a way that allows a spaceship to travel with an arbitrarily large speed. By a purely local expansion of spacetime behind the spaceship and an opposite contraction in front of it, motion faster than the speed of light as seen by observers outside the disturbed region is possible. The resulting distortion is reminiscent of the `warp drive' of science fiction. However, just as happens with wormholes, exotic matter will be needed in order to generate a distortion of spacetime like the one discussed here.

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10.1088/0264-9381/11/5/001