Re: What is Negative Energy ???

From: Ken S. Tucker (dynamics_at_vianet.on.ca)
Date: 01/24/05 

Date: 24 Jan 2005 15:18:05 -0800

Tom Roberts wrote:
...
>In most cases it really refers to a value of the cosmological constant

> in GR that causes a general repulsion or expansion. As normal energy
of
> any type has positive energy density and causes attraction in GR, the

> term "negative energy" got attached to this repulsive behavior.
> Tom Roberts tjroberts@lucent.com

Right, interesting to examine *negative mass* from
the perspective of the equivalence principle (PoE),
that basically states gravitational acceleration is
independent of the substance. IOW's it should follow
the same geodesic as a positive mass.

That's an interesting symmetry.

OTOH one might expect a large *negative mass* to
repel, but the symmetry would not permit that.

Tom Robert's opened a good can of worms, anybody
got a bigger can to put them in :).

Nice
Ken S. Tucker

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