Linked Questions

0
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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 ...
0
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1answer
63 views

General Relativity and antimatter: Would antigravity of antimatter really disprove GR? [duplicate]

I understand that this may be a naive question but my understanding is that GR predicts that antiparticles should be affected by gravity just as regular matter is. But does GR discuss how a massive (...
0
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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 ...
23
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5answers
2k views

What is anti-matter?

Matter-- I guess I know what it is ;) somehow, at least intuitively. So, I can feel it in terms of the weight when picking something up. It may be explained by gravity which is itself is defined by ...
18
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4answers
4k views

Gravity, matter vs antimatter

I have a simple question regarding matter-antimatter gravity interaction. Consider the following though experiment: If we imagine a mass $m$ and an antimass $m^-$, revolving around a large mass $M$ ...
8
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3answers
1k views

Why would Antimatter behave differently via Gravity? [closed]

Confinement of antihydrogen might help provide a future answer. http://arxiv.org/abs/1104.4982
14
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3answers
705 views

Are there models/simulations of antigravitational antimatter-galaxies?

In the comments to another question's answer, I started wondering: Assuming antimatter possessed negative gravitational massĀ§ (which is not proven impossible to date, though deemed unlikely), ...
1
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3answers
1k views

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 ...
2
votes
1answer
537 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 ...
0
votes
3answers
123 views

What would the consequences be if it was experimentally shown that antimatter bends spacetime opposite from matter?

This is inspired by another question I found on here about antimatter bending spacetime the "other way." The answers say that physicists believe antimatter will act the same as regular matter in terms ...
1
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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 ...