Neutrino beam reveals 'new aspect' of cosmos

if you want to explain the "normal-matter excess, consider this:

what if there still ARE equal amounts of matter and antimatter, but in different places

on a sub-atomic level, it is possible that all the matter that was created in the big bang was travelling in one direction, and all the anti-matter was travelling in another, so there are effectively (though not practically) two universes. one of matter, and one of antimatter (or one of each matter, if you prefer that)

its a long shot, and perhaps not true, but thats the same for almost all physics in this field, unproven, but it fits...
until someone here shoots my theory down (i give it one day :P)

thats just my opinion though, i just cant think of another explanation; maybe i should have paid more attention in Physics class?
 
well, if you use Feynmann's explanation of how an anti-matter is a matter travelling backwards in time, then, the anti-matter universe would be one which going into the other direction of time since big bang ;)
 
I wonder why should there be an equal amount of matter and antimatter?

The universe is fundamentally asymmetric - all that is true exist, but everything that is false don't. Whatever is opposite to the universe is not inside the universe.

So, why assume that there should have been equal amounts, but for some unknown reasons there isn't?
 
But the "true" and the "false" are subjective to the human race, no ? Would such concepts exist without us ? And about computers, those are machines we have built with our mental schemes... :hmm:
 
I wonder why should there be an equal amount of matter and antimatter?

The universe is fundamentally asymmetric - all that is true exist, but everything that is false don't. Whatever is opposite to the universe is not inside the universe.

So, why assume that there should have been equal amounts, but for some unknown reasons there isn't?

well, every time we create antimatter, it has an EXACT copy of matter travelling opposite to it from their source, we will probably never create anti-matter without its twin
 
But the "true" and the "false" are subjective to the human race, no ? Would such concepts exist without us ? And about computers, those are machines we have built with our mental schemes... :hmm:
True is something that exists, false is something that don't.
In logic they are equals, in nature, they are not.

---------- Post added at 16:44 ---------- Previous post was at 16:42 ----------

well, every time we create antimatter, it has an EXACT copy of matter travelling opposite to it from their source, we will probably never create anti-matter without its twin
And where did all the matter came from? Why should that process also be the same we know now?
Big bang is a big blur, that theory changed constantly as observations were refined.
 
Don't forget that many particles are actually their own anti-particles.
 
So, why assume that there should have been equal amounts, but for some unknown reasons there isn't?

To conserve energy at the big bang, if I'm not mistaken. In some theories, anyways.
 
To conserve energy at the big bang, if I'm not mistaken. In some theories, anyways.

Yeah, but that is actually the good question, with how much energy the universe really started. We only know that the space time and thus the total energy in the observable universe is likely constant.
 
Yeah, but that is actually the good question, with how much energy the universe really started. We only know that the space time and thus the total energy in the observable universe is likely constant.

Well, it seems to me that many scientists have adapted some sort of "creatio ex nihilum" (probably faulty grammar here, but hey, at least it sounds smart...)
After all, if the universe had energy to begin with, it would get difficult to explain where that energy came from.
 
To conserve energy at the big bang, if I'm not mistaken. In some theories, anyways.
Something from nothing. The vacuum just split into positive and negative particles, and the balance of energy in the universe is zero?

I don't like that idea.

After all, if the universe had energy to begin with, it would get difficult to explain where that energy came from.
That essentially is the question why universe exists and where it came from. If we assume that there is zero at the balance, then the question remains what triggered the split, and so on. Better to cut it off at something unquestionable - there is energy. Occam's razor, if i'm not mistaken.
 
as i understand it, it is more like conservation of charge (and "strangeness" to a point)

as each particle is created, it needs an EXACT opposite to prevent an imbalance in charge, mass, momentum etc. conservation of energy is wrong, since it was this energy that created the matter of the universe

my theory follows on the conservation of momentum. each particle is created independant of every other creation. but since the energy of the big bang could not manifest itself entirely as matter, some was kinetic energy, so some momentum is granted

this must then be balanced instantly, to prevent a break of the conservation of momentum, so a twin particle must be going at the same speed, in the opposite direction, both momentums cancel out, and we have our universal 0 of total momentum.

now, since there must be this conservation, each creation must have at least two particles involved (though not necessarily decaying and propagating, where there may be no residual energy)

and if these particles are created, the total charge amongst the created particles must be opossite, but simply creating a proton-electron pair would be out of balance, since the mass is different, and the equation gets messy... perhaps its easier to just make a "mirrored" particle?

for example, nuclear fusion/fisson is governed by the rule: fission can only occur if the child nuclei will eb more stable (higher binding energy per nucleon), so Iron-56 iwill never fission or fuse, since it has the highest binding energy per nucleon of any nucleus.

perhaps a similar thing occurs when matter is created? of course it COULD create different matter (IE proton/electron instead of positron/electron), but since its easier to make an exactly opposite particle, thats what occurs

coupled with the conservation of momentum, this supports my theory of two seperate universes, of matter and antimatter
[/RANT]

hope you enjoyed that, coz i got no more knowledge left today ;)
 
Conservation of something always implies, that there is something to conserve. ;)
 
there is: charge, momentum, and any other property of a particle and its movement

and as of the big bang, there was plenty to conserve
 
Urwumpe said:
We only know that the space time and thus the total energy in the observable universe is likely constant.
Actually, if I'm not mistaken, total energy of the universe isn't a well-defined quantity, because the space-time is curved. And even if you manage to define it somehow - it won't be conserved. Conservation of energy is connected to the symmetry with respect to translations in time, which we don't have in the cosmic scale, because the universe is expanding.
 
Space-time is not known to be curved yet, that is the big aspect there. There is possibly one slight curvature at the limits of our measurement technology, but it is still behaving flat in our measurements.
 
You're thinking of the flat Friedmann metric. "Flat" there refers to the spatial slices, the space-time as a whole has to be curved because of nonzero matter density (which means nonzero stress-energy tensor, which together with Einstein equations means nonzero Ricci tensor - which describes curvature).
 
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You're thinking of the flat Friedmann metric. "Flat" there refers to the spatial slices, the space-time as a whole has to be curved because of nonzero matter density (which means nonzero stress-energy tensor, which together with Einstein equations means nonzero Ricci tensor).

No, I mean flat as in no acceleration of the expansion and thus no change in the energy of the universe.

Non-zero matter density curves space, but not space-time. Important difference (Because the curvature effect comes from the time-like dimension). A curved space-time, additionally to the curved space, is an much more complex topic, because the matter gets a much stronger or weaker effect, and energy is transfered into or from the universe.
 
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