Antiparticles Question

[Gullemsmcgee]

Sorry if this sounds stupid, but isn't it possible that as matter attracts matter, anti-matter repels matter?

 

As a result, all the anti matter created in the beginning goes the other way from our "non anti-matter" matter, effectively creating a situation of 2 seperate .... what word could be used for it universes?

 

Of course were such a simple reason the answer Im sure it would have been thought of, so perhaps you can explain to me why my simplistic reasoning is wrong ;o

[Klaynos]

antimatter has attractive gravity, and positive mass.

antimatter has opposite charge to it's matter equivalent, so they do infact attract each other.

[Spyman]

Personally, I favor normal gravity interaction between anti and normal, but it has not been tested.

 

The gravitational interaction of antimatter with matter or antimatter has not been conclusively observed by physicists. While the overwhelming consensus amongst physicists is that antimatter will attract both matter and antimatter at the same rate matter attracts matter, there is a strong desire to confirm this experimentally. If the gravitational interactions between antimatter and matter were found to be repulsive it would be a potential violation of conservation of energy – arguably the most fundamental law of physics.

 

The CPT theorem asserts that antimatter should attract antimatter in the same way that matter attracts matter. However, there are several theories about how antimatter gravitationally interacts with normal matter:

 

Normal gravity - Standard theory asserts that antimatter should fall in exactly the same manner as normal matter.

 

Antigravity - Initial theoretical analysis also focused on whether antimatter might instead repel with the same magnitude. This should not be confused with the many other speculative phenomena which are also called 'antigravity'.

 

Gravivector & Graviscalar - Later difficulties in creating quantum gravity theories have led to the idea that antimatter may react with a slightly different magnitude.

 

http://en.wikipedia.org/wiki/Gravitational_interaction_of_antimatter

[swansont]

Ppeople are working on it, though. Antihydrogen has been made, and so you can start thinking about doing experiments.

 

http://www.phy.duke.edu/~phillips/gravity/GravityExpt.html