I think they will find the answer when they look upon gravity as a resultant force within mass.
Resultant force within mass? The sum of all forces within mass is zero. In ETG, gravity can't be considered a force, but rather a path of least action determined by the geometry created by the g mu nu field associated with the field defined by gravity:
ds^2 = g mu nu * dx^mu * dx^nu.
When g mu nu = constant we have instantaneity or simultaneity, spooky action at a distance a la Newton, say, the Minkowski space, When the g mu nus are functions we have a natural explanation for acceleration, but then, gravity is best interpreted as geometry. IF you find this a little spooky too, you're onto something.
A highly speculative guess about this could be that just as we are able to manipulate atoms to get heat, we may be able to do the same to get gravity.
Speculative? Gravity can do work. That's how dams generate energy. Grandfather clocks too.
And therefore a "gravity drive."
Different animal. Such a device requires two things: worm holes without exotic matter, a very feasible proposition, and the discovery that some aspect of gravity has a velocity strictly greater than c. Call it, spin -1 field whose proper construction can save string theory without requiring supersymmetry. |
