Recent content by brooknorton1

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    I How we are in a matter dominated universe (without antimatter annihilation)

    That description helped. Assuming that the particle and its antiparticle are created in close proximity, after inflation, it seems we should have near total annihilation, with just a few stray atoms and anti-atoms here and there, but we see a lot of matter. I can now better appreciate the...
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    I How we are in a matter dominated universe (without antimatter annihilation)

    I don't know enough to know what the current thinking is on the largest theoretically possible quantum noise in the pre-inflation seed. It seems for quantum random phenomenon, I hear that a quantum event is extremely likely to fall into a most likely range, but that the tail of probabilities not...
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    I How we are in a matter dominated universe (without antimatter annihilation)

    If you could help me here - how do you get those quotes to reply to like "brooknorton1 said"... You say "That's because of gravitational clumping over billions of years. It doesn't mean there was that much variation just after the end of inflation and the formation of our "bubble". There...
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    I How we are in a matter dominated universe (without antimatter annihilation)

    We know that within regions in our visible universe that matter density varies, so there is not perfect homogeneity. It would just be an extrapolation to say that matter densities vary on a larger scale. Compared to our total bubble volume, our visible volume might be a very very tiny fraction...
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    I How we are in a matter dominated universe (without antimatter annihilation)

    So initially the random distribution of matter and antimatter in our visible universe was nearly equal, with a slightly higher amount of matter than antimatter. The balance of antimatter residing within our bubble but beyond our visible horizon.
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    I How we are in a matter dominated universe (without antimatter annihilation)

    Assuming the situation where there is an infinite inflation stream, from which bubble universes are appearing in locally slowed regions. There could be many many such bubble universes and so very rare occurrences in some bubbles can sometimes happen. Also assumed, as is often postulated, that...
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    I Falling through the event horizon of an evaporating black hole

    Interesting about falling vs hovering clocks. Thanks.
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    I Falling through the event horizon of an evaporating black hole

    Would it be incorrect to say... Bob starts out far from the black hole at t=0. I'll use "t" to mean as Bob measures it. As Bob approaches the horizon that he will see outside events accelerating. At some point in approaching the horizon he will see events that are a million years later than t=0...
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    I Falling through the event horizon of an evaporating black hole

    I wish I were more knowledgeable on the physics to more directly reply. But this comes to mind - surely, time dilation in a gravitational field is real. Doesn't that make the outside observer's view a consistent way of seeing things? It sounds like you are saying the outside observer does not...
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    I Falling through the event horizon of an evaporating black hole

    I haven't read an references recently; mostly watching videos lately.
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    I Falling through the event horizon of an evaporating black hole

    I have heard that an person falling toward a black hole would 1) start to "freeze" from the viewpoint of an outside observer as the infalling person's (call him Bob) time dilation slowed Bob's time to a crawl, and 2) from Bob's viewpoint it would seem that he simply falls through the horizon...
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