Right, but expansion IS movement. And FTL expansion could not happen if “c” was in effect at that time. And for some theoretical particles “c” is NOT a limitation. Tachyons are by definition FTL. Thus (if they do exist), they must exist in a different dimension from our 4, where “c” is NOT a limitation..
Just to be accurate, tachyons are hypothetical particles that exist in our 3 spatial + 1 time dimensional space, however they travel along world-lines that are space-like, not time-like like other particles and ourselves.
Thanks for that explanation.
However, if tachyons do exist and do not travel in all 4 dimensions (which make up our reality), my observation is not necessarily incorrect. What is space without time? According to GR, one cannot exist without the other. How then can a tachyons exist at all, if not in 4D (3+1) spacetime?
Special Relativity forbids objects travelling slower than light-speed, c, to actually achieve c and surpass it; tachyons if they exist would always travel faster than c and could not slow down to c or below it.
That was the underlying point of my proposition.
They have been looked for and in September 2011, it was reported at CERN that a tau neutrino had travelled faster than the speed of light; however it seems now that they hadn’t synchronised their clocks properly!
No wonder, if tachyons do not follow a time-line, how can we even begin to measure the time it takes for a tachyon to travel from here to there? Does it travel as a probability wave?
I am truly interested in the mechanics of FTL, as IMO, a time-line is the result of change. Thus any dynamic particle (real or hypothetical), should have an associated time-line. Is this what Einstein called “spooky action at a distance”? Entanglement?
If I understand David Bohm, he postulated a higher dimension of pure potential, without any physical properties whatever. Only in the Implicate (the formation of a metaphysical image) do these potentials acquire sufficiently focused interaction (metaphysical harmonics?), whith increasing “probability” for becoming explicated in our reality, that narrow band range we can actually observe even with our sophisticated instruments.