Conservation

The unphysical nature of 'warp drive'

1997 · Published theoretical analysis

Theory & models

What this work contributes

Applies quantum-inequality reasoning to the Alcubierre warp-drive metric under a locally flat approximation. It finds severe wall-thickness and negative-energy requirements for that model.

Where the evidence stops

This analyzes a specified spacetime metric, not an undefined Alpha 1 framework. Neither borrowing the term geometry nor mapping a field evades the need for an explicit stress-energy model.

Original source

Michael J. Pfenning, L. H. Ford. The unphysical nature of 'warp drive'. Classical and Quantum Gravity 14, 1743–1751 (1997).

DOI: 10.1088/0264-9381/14/7/011

How we use it

This record belongs to Conservation. Its evidence label describes the cited work, not the maturity of a Metric Flight device. Follow the original methods, corrections and conditions before transferring a result to a different geometry or scale.

Editorial note reviewed 19 October 2026. AI assisted research discovery and synthesis. Citation metadata and claims were checked against primary publication or institutional records; full-text access varies. Read the source for the complete method.