The unphysical nature of `warp drive'
Abstract
We will apply the quantuminequalitytype restrictions to Alcubierre's warp drive metric on a scale in which a local region of spacetime can be considered `flat'. These are inequalities that restrict the magnitude and extent of the negative energy which is needed to form the warp drive metric. From this we are able to place limits on the parameters of the `warp bubble'. It will be shown that the bubble wall thickness is on the order of only a few hundred Planck lengths. Then we will show that the total integrated energy density needed to maintain the warp metric with such thin walls is physically unattainable.
 Publication:

Classical and Quantum Gravity
 Pub Date:
 July 1997
 DOI:
 10.1088/02649381/14/7/011
 arXiv:
 arXiv:grqc/9702026
 Bibcode:
 1997CQGra..14.1743P
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 11 pages, 3 figures, latex. This revision corrects a typographical sign error in Eq. (3)