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Author Topic: Is there an anti-Universe?  (Read 2923 times)

Offline johnson039

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Is there an anti-Universe?
« on: 25/08/2009 15:21:53 »
anti-electron and anti-proton do exist, anti-hydrogen and anti-helium do exist, so do anti-universe exist?
imagine an anti-universe with all things made up of anti-matter, with positively charged tiny particles surrounding negatively charged anti-proton. I read from a book this type of theoretical C-reversed universe.
there is another type of reversed universe, it is like a mirror image of our universe, named P-reversed universe.
But the P-reversed universe and CP-reversed universe are proved not possible by our physicists using mathematics. the book also mentioned a possible type is called CPT-reversed universe, which is all charge, parity and time reversed to our universe. But the author said this is possible in maths but not making any sense, so it is not possible either
here's my question, why we (our "normal"- universe) can use our own law of maths and our own thinking to prove how another universe work?
i got an idea that if the anti-universe are actually not in our three dimensions, but other dimensions? the anti-matter we created is actually gained some access to another dimensions?
these are just my guessing and i really want to share because all of my friends are very not interested such topics.

[MOD EDIT - PLEASE PHRASE THE TITLES OF YOUR POSTS AS QUESTIONS, IN LINE WITH FORUM POLICY; THANKS, CHRIS]
« Last Edit: 27/08/2009 22:29:58 by chris »


 

Offline Vern

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Re: Is there an anti-Universe?
« Reply #1 on: 25/08/2009 15:47:03 »
The idea that there might exist another universe consisting of antimatter is interesting. I know of no principle or law of nature that would prevent that. It is even possible I suspect, that there may be a galaxy in this universe that consists of antimatter. But if it did and it collided with a galaxy like ours, the fireworks would be really big.

I think there are photon signatures at some frequencies that would indicate that a galaxy consisted of antimatter. So far, none have been observed. For example, we see two photons of energy of about .510 Mev when electrons and positrons annihilate each other.
« Last Edit: 25/08/2009 16:16:01 by Vern »
 

Offline DrChemistry

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Re: Is there an anti-Universe?
« Reply #2 on: 25/08/2009 16:13:19 »
This is coming completely out of the blue, since I do not have much knowledge in Astronomy and Cosmology.

But if we think of our Universe as just one out of many in a string like formation over a long period of time, then isn't it possible that the anti-universe could be parallel with ours? It exists, but undetectable because it is not within our borders.
 

Offline Vern

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Re: Is there an anti-Universe?
« Reply #3 on: 25/08/2009 16:18:26 »
Of course that is possible. I am surprised that the theories of successive bangs and collapses haven't yet come up with reversing the signs successively. Then you have universe, anti-universe in succession. :)
 

Offline DrChemistry

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Re: Is there an anti-Universe?
« Reply #4 on: 25/08/2009 16:21:35 »
Maybe they haven't thought of it ;)

Luckily, in that case we should be safe from collision between matter and anti-matter.

Thank you for the clarification. :)
 

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Re: Is there an anti-Universe?
« Reply #4 on: 25/08/2009 16:21:35 »

 

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