66 ms·
Which kind negative curvature does the drive need?
by whatshisface 5y ago
Which kind negative curvature does the drive need?
- pdonis 5y ago"Negative curvature" isn't quite the right term. (For one thing, curvature in 4-dimensional spacetime cannot be described by a single number.) The Alcubierre drive requires "exotic matter", i.e., matter that violates the weak energy condition. One way of phrasing that condition is that the matter will have negative average energy density as measured by certain observers.
- pdonis 5y ago> Which kind negative curvature does the drive need? The issue with your reasoning is not what kind of curvature the drive needs, but the idea that there is a "natural" bending of spacetime at all. There is no such thing.