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Why is the energy density of the dark energy component of the same magnitude as the density of matter at present when the two evolve quite differently over time; could it be simply that we are observing at exactly the right time?
List of Unsolved Problems in Physics
The essence of the cosmic coincidence problem is that while radiation and matter densities drop very rapidly and at different rates as the Universe expands, a dark energy density described by a cosmological constant stays constant throughout the entire history of the Universe. Thus there is only one unique time in the long history of the Universe where the DE density and matter density are roughly equal. The cosmic coincidence is that this occurred very recently at around a redshift of z 0.39. If this current epoch of cosmic acceleration had started even slightly earlier, the DE dominance would have stopped structure formation, and galaxies, stars, and life on this planet would not exist. If this epoch had been even slightly later, we would not have discovered the current accelerated expansion
Anti-Anthropic Solutions to the Cosmic Coincidence Problem
Negative matter only exists on chalkboards, and there's absolutely no indication that anyone's ever detected that negative mass, negative matter, and negative energy exist.
Terribly sorry if I misunderstood your post, but does your theory (which I BTW find well-thought) imply that dark matter is caused by negative space?
One must not forget that dark matter has mass, and not negative mass.
But hold on a minute, wasn't I just talking about dark matter? Well this also helps us to explain dark matter when you look at it carefully. If you take away a negative something, you end up with more of that something then you started with. So what happens when you create a cavity of negative matter around a galaxy... presumably it would create an effect very similar to increasing the mass of the galaxy, thus we get dark matter.
Basically im saying you are wrong, energy can never come from nothing/nowhere. There has to be a cause, that causes the cause to cause, because. And a cause is always something.
you are saying these things with words but creating no visual or mental pictorial analog. where and how does negative space and energy exist, you say other dimensions, where and how? outside the universe, a whole mirror universe on top of this universe, what do these things mean, and how are they possible?
swanne
reply to post by ChaoticOrder
Thanks for the clarification!
In the meanwhile, I'd like to invite you to check out my theory about matter and energy: www.abovetopsecret.com...
NorEaster
Negative matter only exists on chalkboards, and there's absolutely no indication that anyone's ever detected that negative mass, negative matter, and negative energy exist.
I like to imagine all of Space and Time as cloths hanging out on a backyard lawn. I imagine an infinite number of them lined up side by side. Each side of a cloth represents a dimension or reality. As the cloths move in the wind, sometimes the fabrics touch each other. It is within this touching that the big bang may have occurred. The interaction of the separate cloths create another cloth that will join it's brethren along the infinite sea of clothes blowing in the wind.
ImaFungi
You dont get something from nothing. Something is not nothing. Something is something.
MrInquisitive
Isn't negative matter anti-matter? Anti-matter has been discovered and created in the lab for a few decades now, if I'm not mistaken.