Message boards : LHC@home Science : Antimatter, Antitime, and Anti-photons.
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Aaron Finney

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Message 24971 - Posted: 28 Nov 2012, 11:50:09 UTC
Last modified: 28 Nov 2012, 11:54:48 UTC

I was thinking today that anti-matter might already exist in the universe, it's just that we can't see it. Whole galaxies of anti-matter could exist in our universe, in the portions of space that we think are "empty", because anti-matter would be travelling backwards in time in it's own gravity-wells. If the anti-photon works exactly opposite to the photon, then it would be travelling in reverse, be the *vaccum* of light, and be unobservable in our universe by normal light-detecting methods.

My question is, how would you detect anti-matter, if it is not emitting anything *backwards* to it's relative time? In other words... if It is (relative to our direction of time) a vaccum of all radio, gravity, and light observation, how do you detect that in our direction of time?

I'm thinking that the only thing in the universe that does not "experience" time would be the fabric of space itself. A black hole would be constantly absorbing and accumulating more and more of space itself as gravity does it's magic to pull in the fabric and (relatively) compress it inside itself. If there *are* antimatter galaxies, then it is safe to assume that there are also anti-black-holes. You should be able to detect the movement of space (relative to us) OUTWARD from these sources. This explains the expansion of space in our normal section of the universe, and why there is so much matter unaccounted for in the universe. If the majority of the universe is anti-matter... then the resulting pressure would result in an outwards expansion of the universe, as these anti-black-holes and other anti-matter anti-gravity sources PUSH (relative to our time direction) space outwards.

I guess this would also mean that photons are not affected by time. Since photons travel at the same speed and it is constant, no matter if it is close to a gravity center or not (and gravity affects time) then it is safe to say that photons, because they do not have mass, are not affected by time itself. Photons would pass right through anti-matter portions of the universe as if it were a blank pane of glass, and apparently in our direction of time.

Any thoughts...? Could this be the "Dark Matter" we've been looking for?
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Message 24995 - Posted: 6 Dec 2012, 22:43:31 UTC - in response to Message 24971.  

er.. no.

to me it sounds like tachyons you're thinkin' about. Anti-black-hole is just a area there's a flat space - a vacuum.
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Mark W. Patton

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Message 25049 - Posted: 3 Jan 2013, 13:11:50 UTC - in response to Message 24971.  

Interesting thoughts. Although some may disregard this line of thinking, I would say pursue it. Follow it from one point to the next. Develop your line of thinking and supplement your knowledge with some of the other "non-traditional" materials available. Do not be dissuaded by those who would simply scoff at your ideas.
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Profile Kathryn Tombaugh Weber

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Message 25051 - Posted: 5 Jan 2013, 6:45:20 UTC

Yes interesting. I have my own ideas about this, and not all conform to current theory. Of course, that's how all new discoveries are made. I believe there is more than one universe and that we only experience 1/2 of the linear dimension of time. Actually I wonder if we put our concept of time on the X-axis, we would only see the positive half. Your anti-universe might be the negative half, and there might be other aspects of time which would form other axes. Well now I'm just speculating, but I think there is much more to be discovered. :)
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Message 25471 - Posted: 8 Mar 2013, 9:14:42 UTC - in response to Message 24971.  

Hello Aaron,
I think you have some confusion about what antimatter is. Antimatter already exist in the universe, it's not a "star trek" stuff. Each particle have his antiparticle, that is perfectly identical, except for the electrical charge that is opposite. That it. No backwards travel in time are implied. For example, electron have is how antiparticle, the positron, that is one of the 2 particles produced when a photon "materialise" in the pair production process. Al this phenomena are well known, nothing exotic here. For sure you heard about the LEP accelerator, the one that was at cern before the LHC era. Well, the LEP (Large Electron Positron collider) was, as his name suggests, a collider of electron and positron, so a collider of matter and antimatter if you want. So, you see, there is nothing really "strange" in antimatter. At cern the experiment ALPHA is studying the properties of the anti-idrogen, that means an atoms built with an antiproton and a positron.
The problem with antimatter is that interacting with matter it annihilates into photons (that is the way you detect it) and is difficult to confine an neutral atom of antimatter for long time.
There are a lot of question still open regarding the dark matter in the universe, but it is excluded that they are built by antimatter, otherwise they will annihilate through interaction with normal matter.
What I want to stress is that antiparticles **are not** travelling back in time. Nothing to human knowledge can. If you heard of this "feature" referred to the Feynman diagrams, this is only a pure mathematical assumption, that is used to make computation easier in a more graphical way. No physical meaning here.
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