Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-10-19
Class.Quant.Grav. 19 (2002) 1157-1166
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
8 pages, 3 figures; typos corrected, references added
Scientific paper
10.1088/0264-9381/19/6/308
It is commonly believed that Alcubierre's warp drive works by contracting space in front of the warp bubble and expanding space behind it. We show that this expansion/contraction is but a marginal consequence of the choice made by Alcubierre, and explicitly construct a similar spacetime where no contraction/expansion occurs. Global and optical properties of warp drive spacetimes are also discussed.
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