'Dark fluid' with negative mass could dominate the universe

Re:'Dark fluid' with negative mass could dominate the universe by Nasrudith on Wednesday December 05, 2018 @03:40PM (#18612297)

Screwily to our intuitions negative mass goes in the opposite direction of its acceleration.

It still goes away but the acceleration is in the same direction. It is weird and easy to be confused.

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Re:'Dark fluid' with negative mass could dominate the universe by eutropia on Wednesday December 05, 2018 @06:27PM (#18613820)

I think you meant to say that the mass accelerates opposite to forces acting upon it.

An idealized -M + M = 0 pair of particles (one normal, one negative mass) could experience runaway acceleration. Author touches on this in the paper as a potential source for the incredibly high-energy extra-galactic cosmic rays.

Granted, the paper describes a model in which something that acts like a particle with negative mass exerts this force upon things, but has no claims as to what a physical manifestation of this would look like.

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Re:'Dark fluid' with negative mass could dominate the universe by FabHK on Wednesday December 05, 2018 @05:56PM (#18613588)

Damn, you're right, there goes the hoverboard.

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