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Warp Drive With Zero Expansion
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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.
Forward citations
Cited by 3 Pith papers
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Steering a warp drive without exotic matter
A positive-energy steerable warp drive is constructed by matching the Kinnersley photon rocket to a flat passenger worldtube, with acceleration controlled by Bondi mass loss obeying a closed-form law.
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Warp Drive in a De Sitter Universe
A warp bubble moving with the Hubble flow in de Sitter space can have non-negative Eulerian energy density and satisfy averaged energy conditions.
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The Warp Drive: Superluminal Travel within General Relativity
Coupled fluid sources to the Alcubierre warp drive metric yield Einstein equation solutions, some satisfying energy conditions, but none forming a localized warp bubble.
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