Re: When did the universe begin?
Posted: January 17th, 2016, 6:23 pm
Fanman wrote:If quantum mechanics was able to find a "solid" or viable theory for the formation of the universe which was at odds with the current theories such as the big bang, which would take precedent for you and why?I would have no problems letting go of the big bang. Out of absolute nothingness, not even time or space, comes an unfathomable rush of raw energy? That takes some 'splaining. The idea suggests to me a gigantic leak, like a punctured high pressure fluid container - but a puncture in what? Aside from inflation, one of the more elegant narratives going around is m-theory - where the BB is postulated to be the collision of 'branes existing in different dimensions, which then fill with the energy of the collision.
There's a beautiful theory about the creation of the universe based on holographic time. Below is an excerpt from the Through the Wormhole episode, "Will eternity end?" (recommended):
Is our universe destined to die in a cosmic cataclysm? Perhaps not, because time may not be what we think it is, and all of eternity might already exist.
Physicists tell us that time is the fourth dimension but it's not like the other three that we move around in. In space, I could walk from here to here and then turn around and go back again. Time's dimension seems different.
We only move through it in one direction.
But there may be a way to grasp all of eternity if we stop thinking about time as a dimension and start thinking about time as a projection from the future to the past.
For Harvard physicist Andy Strominger, the difference between the future and the past is a deep puzzle because, according to the known laws of physics, they should be exactly the same. There's a very basic principle of physics which begin with Newton. The past determines the future, and the laws of physics can be run forward or backwards. So, if I take this motion of this pendulum hanging from the pencil and you run the movie forward or backwards, it looks exactly the same.
But there's a huge white elephant in the room of physics, and that's the Big Bang. So, the cartoon picture of the Big Bang is that there was nothing. Somebody flipped a switch, and, all of a sudden, all the something that we know of was present. So, the past of our Universe and the future of our Universe look fundamentally different.
To resolve this paradox, Andy began to imagine the dimension of time a radical new way -- as a hologram. Holograms are two-dimensional plates from which a third dimension of space appears to emerge. Andy wondered if he could apply this idea not to space but to time. Perhaps a dimension of time is just a holographic projection. Time is a kind of illusion and the whole universe is written at a hologram that is sitting there at the end of time and projected backwards through our present era back to the Big Bang.
The hologram that contains everything the universe ever was and ever will be is like this intricate ice crystal [shows large crystal sculpture a couple of feet high). According to Andy, it sits in the far future and projects information back into the past.
So, this sculpture represents the holographic plate, which contains all the information about the entire lifetime of the Universe. As I look at this very closely, I can see more and more detail. From far away, or more accurately, from further back in time, there would be less and less detail, less and less information present in the universe itself. The further you get from a holographic plate, the less information you can read on it.
So, as we travel back in time from our present day, in a highly complex universe of planets, stars, and galaxies, we move to a simpler past, to a universe the way it was billions of years ago, filled with nothing more than clouds of gas. Eventually, if you go far enough back in time, before the Big Bang, there is simply nothing there at all.
Holographic time is the only theory that logically explains how our Universe began from nothing. Once you get too far back in time from the holographic plate, it cannot project back any more information. Before the Big Bang, there is no information in the universe.
In a holographically-emergent universe, we don't have a Big Bang. There isn't a special moment when, all at once, everything in the universe came into being. Rather, we have an ongoing continual bang, which started from nothing and kept banging and banging onto the future. In the past, there was nothing. In the future, there is everything.
The mathematics behind Andy's theory are highly complex. Holographic time is not laid out like any normal dimension. As you go further and further into the future, the same increment of time moves you less and less far forward. So it would take an infinite amount of time to actually arrive at the holographic plate.
In this picture, our Universe goes on forever into the future and gets bigger and bigger and keeps growing and creating new elements. So we don't know that it describes our universe. We're very far from that but we do know that it is something which can be discussed with some mathematical precision and consistency, and that's a starting point.
That would make the first moment of the big bang simply the most distant perspective of the "everything" at the end of time which we would never reach, slowing down as we approached just as matter can only approach but never quite achieve the speed of light.
All these hypotheses could be wildly wrong for all we know. Then again, reality may be perspective-based, in which case in the theories with viable math would all be at least partially correct, like the blind men and the elephant.