Quantum effects in the Alcubierre warp-drive spacetime

William A Hiscock
1997 Classical and quantum gravity  
The expectation value of the stress-energy tensor of a free conformally invariant scalar field is computed in a two-dimensional reduction of the Alcubierre "warp drive" spacetime. The stress-energy is found to diverge if the apparent velocity of the spaceship exceeds the speed of light. If such behavior occurs in four dimensions, then it appears implausible that "warp drive" behavior in a spacetime could be engineered, even by an arbitrarily advanced civilization.
doi:10.1088/0264-9381/14/11/002 fatcat:qzjybdnxunhkxgojrp2tmp4eta