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Why is there more matter than antimatter at this point?

  1. Jul 24, 2015 #1
    What I have read about antimatter amounts to about this much:
    -Each particle is paired with an antiparticle, and when they meet, they annihilate.
    -When a particle and antiparticle annihilate, they produce energy and gamma rays.
    -It is hypothesized that before the Big Bang, there was an equal amount of matter and antimatter, and when they collided, there was a massive creation of energy; but somehow an imbalance favored matter over antimatter.

    But HOW? WHY?
    (As my name suggests, I am not such a nerd that I know every physics fact there is. [Does anyone?])
     
  2. jcsd
  3. Jul 24, 2015 #2

    Drakkith

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    Technically it was a short time after the big bang that all this matter and antimatter existed.

    Anyways, to answer your question... we don't know!! It's a question to which we don't have an answer at this time. It's probably due to a symmetry violation, such as CP violation.
     
  4. Jul 24, 2015 #3

    Orodruin

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    If you can answer this question and experimentally verify your answer, you will win a Nobel prize!

    There are some conditions that we know must be satisfied in order for this to happen (the Sakharov conditions), but it is currently not known exactly how it did happen during the history of the Universe.
     
  5. Aug 2, 2015 #4

    Gaz

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    This is just a thought.

    Hawking's radiation explains how positive mass particles created can escape a black hole and the negative mass particles fall into the black hole and annihilate a positive mass particle inside reducing it's mass and eventually it is reduced to nothing right ?
    If that is the case is it possible then that a antimatter black hole would do the same only the negative particles falling into the black hole would have no positive mass particles to annihilate with and a antimatter black hole would grow in size?
    Thus all the antimatter could be locked up inside black holes with no way of escaping and all the matter can in a way escape and spread out through the universe.
    Would this mean a black hole made up of antimatter would create matter and grow in size violating the conservation of energy rule or would the antimatter be classed as negative energy thereby not violating any rules?

    Could this be a plausible or not ???
     
    Last edited: Aug 2, 2015
  6. Aug 2, 2015 #5

    Orodruin

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    Not. There is no such thing as an "anti-matter" black hole. A black hole does not a priori distinguish matter from anti-matter. Also, anti-matter does not have negative mass. Please do not post personal theories on Physics Forums.
     
  7. Aug 2, 2015 #6

    Gaz

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    It wasn't a theory it was a question but ok.
     
  8. Aug 2, 2015 #7

    Vanadium 50

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    Adding a question mark after a personal theory does not change it's nature. You were complaining earlier that this forum didn't allow personal theories - this is why: people expect an answer to their questions to be based on science as it is practiced and understood, and not personal theories.
     
  9. Aug 2, 2015 #8

    phinds

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    No, not really. That IS the way you'll see it described in popular science but it's not quite what actually happens. That form of explanation started with Hawking because, he said, he could not think of any other way to even come close to describing in English what really happens, which can only be described by the math.
     
  10. Aug 3, 2015 #9

    Gaz

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    I didn't even get that bit right and they clicked on i added the q marks so it wasn't a theory lol. Oh well like it or not I enjoyed thinking it up. =)
     
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