Linked Questions

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3answers
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Anti-matter repelled by gravity - is it a serious hypothesis? [duplicate]

Possible Duplicate: Why would Antimatter behave differently via Gravity? Regarding the following statement in this article: Most important of these is whether ordinary gravity attracts or ...
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3answers
162 views

Why do people suspect antimatter falls upward? [duplicate]

Antimatter is similar to ordinary matter except they have the opposite charge, i like to know why this difference in their spin would affect their motion in the curvature of our 4-dimensional ...
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0answers
113 views

Complete annihilation of matter-antimatter [duplicate]

Possible Duplicate: More on matter and anti-matter Everyone knows that when matter and anti-matter come in contact, they result in pure energy. I want to know that if atoms and anti-atoms of two ...
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1answer
54 views

Anti matter of gravity [duplicate]

We all know that the fundamental particles to be controlling the electric and magnetic forces in our universe are obtained in pairs(electrons and protons, north pole and south pole.) Likewise I guess ...
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0answers
52 views

Antimatter traveling back in time and gravity [duplicate]

I've been reading on the construct of considering antimatter as matter traveling backward in time, which seems like an useful tool. There seems to be some discussion around this concept, if ...
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0answers
47 views

How does an antiparticle respond to a gravitational field? [duplicate]

A related Wikipedia page provided a little overview. However, here's the question: If an anti-particle acquire a negative mass $m$ in QFT, doesn't $F=ma$ indicate that the anti-particle will ...
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8answers
3k views

Does antimatter curve spacetime in the opposite direction as matter?

According to the Dirac equation, antimatter is the negative energy solution to the following relation: $$E^2 = p^2 c^2 + m^2 c^4.$$ And according to general relativity, the Einstein tensor (which ...
8
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2answers
3k views

Do particles and anti-particles attract each other?

Do particles and anti-particles attract each other? From the very basic understanding that they are created out of nothing mutually and collide to annihilate each other seems to indicate this happens ...
19
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1answer
709 views

In general what will holding an anti-hydrogen atom for more than a 1/10th of second allow scientists to discover?

In general what will holding an anti-hydrogen atom for more than a 1/10th of second allow scientists to discover? Specifically, given that they can hold one for <1/10th of a second, what would ...
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4answers
449 views

Could the outer structure of the Universe be made from Antimatter?

CERN recently stated that antimatter may be repelled by matter, much like the opposite effect of Gravity. So is it possible that antimatter is actually repelled to the edges of the Universe to create ...
2
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1answer
536 views

How do matter and antimatter interact gravitationally?

Me and my brother were watching television tonight, and he asked me a question that was somewhat along the lines of this: What would happen if the Earth was made of matter, and the moon was made of ...
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3answers
402 views

Anti-matters effect on time and gravity

Assuming that energetic gamma photons travelling in free space at the speed of light have no influence on time and gravity (to my best knowledge no one ever measured a time dilation or gravitational ...
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3answers
265 views

What is the Current Status of Measurement of the Gravitational Mass of Antimatter?

My current understanding is that it's generally expected (and has been predicted) that antimatter will fall down and not up in earth's gravity. But I haven't been able to locate any definitive ...
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1answer
207 views

Gravity and antimatter

If we put earth like planet made up of antimatter (same mass of earth, same diameter etc..) with same distance from moon as current distance between earth and moon then center of gravity of moon and ...
3
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1answer
324 views

What effects would a finding of Gravitational Repulsion Between Matter and Anti-Matter in the ALPHA Experiment have on Mainstream Theory?

The actual nature of the gravitational force between matter and anti-matter (attractive or repulsive) remains unsettled: See Are there experiments taking place right now that might show evidence for ...

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