Can quantum spin be converted to macro systems?
I'm designing an FTL system for a new universe, and I'm trying to figure how 'plausible-sounding' this thought is.
The idea is that space is tangled and twisted in twelve dimensions, so that distant points of three-dimensional space are connected in twelve-dimensional knots, and passing from one part of space to another requires multi-dimensional rotation. Think of it like a set of points on a railway line - the line itself is effectively one-dimensional, but by rotating a train through a second dimension you can switch to a different track.
Our macro universe being, as it is, three dimensional, we have no way to push against these extra dimensions in order to initiate the rotation. This, perhaps, is where quantum mechanics comes in.
Suppose that we are able to control the spin of subatomic particles with extreme precision in twelve dimensions. We spin up a block of "quantum flywheels" in the direction we want turn.
Can that spin then be transferred (albeit at VASTLY reduced speed, of course) to the entire ship, allowing it to rotate through those extra dimensions?
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Have you ever heard of the Einstein-de Haas effect?
Take a large piece of iron, cylindrically shaped. Now, put it in an external magnetic field. The bar should become magnetized. Given that magnetization arises from the orientation of electron spins inside the bar, there's a change of spin angular momentum. However, spin angular momentum is just another form of angular momentum, and angular momentum must be conserved. Therefore, the bar will begin to rotate a small bit, to keep the total change in angular momentum zero.
Whether you could do this on a large enough scale is something else entirely. However, using a very, very large magnetic field and the right object, under optimal conditions, perhaps you could have a shot at doing what you want.
There will, of course, be problems:
- You would need to have a very large piece of metal to be magnetized.
- You would have to protect the rest of the ship from the magnetic field.
- The rotating system wouldn't exactly be very portable.
- The entire process could expend a lot of energy.
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