The Multiverse
in [Physics]
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From: rick_s on 25 Jul 2010 05:58 I listened to a great episode of the BBC radio program with Melvin Bragg called In our Time, (excellent series of broadcasts discussing science history and literature) and I was impressed that the opinions of the experts, was fairly modern. Now that is a major departure from just a few years ago when the opinions out of Cambridge and Oxford in particular, were always at least a hundred years old or so it seemed. Now why this particular show in that series which aired Feb 2008 is so appealing to me is that the opinions are so open-minded, arguments rational, logical, and reasonable. In the past even going back to 2004, often when I heard people speak so adamantly of popular theories that are now completely overturned, it is like that feeling you get when someone runs their fingernails down a chalkboard. You know with the age of the Internet and forums such as this one raging on into the future, well its just nice to know that these professors in Britain have finally got a good Internet connection at last. Here is the program. In Our Time, my favorite show of all time. http://www.bbc.co.uk/programmes/b008z744 Collect them all. They are well worth the effort. A gathering of minds that entertain and inform to be sure. If you don't like to hear British people talking then maybe it's not for you, but they are as eloquent as Shakespeare at times and as comical as um John Cleese himself at other times. I have learned absolutely nothing, but have heard them all at least 4 times. And now, the multiverSE! I like the way you have laid out this goal of string theories. I think that it is an excellent platform with which to frame a new style of physics. One that is safer for the general population. To encode it in higher dimensional physics. Providing people do that and not just create flea circuses as if they were on the dole or something. Now if as a for instance we live in the Matrix, that's two universes right there, and if universes can be computer programs, then you can have as many as you would like. And then from there that leads towards the notion of a higher dimensional series of shells, as well as various levels or variations within each shell. As far as the graininess, of space-time, it is interesting to note that Newton had ideas about grainy light corpuscles, and Einstein had notions of light quanta, so you see it is already built in and during the time of Bacon and Descartes, they were already considering the ether what we now call space-time, or the Dirac Sea, or the quantum foam, what geometry this ultimate graininess might have. And they came up with greased ball bearings for lack of comparison to anything else. Myself I think the quantum foam has been adequately proven to exist by the incredible body of work done wrt Bose Einstein condensate as well as the study of phonon energy, or phonons themselves, which are energy waves which can move through atoms, through matter, or the space between them. And when you cool an area to as close to absolute zero as you possibly can, well it does look like a black void. I mean there appears to be absolutely nothing there, yet out of there spring virtual particles and even zero point energy and all sorts of quantum effects that are below our level of detection. So unlike the guest who imagined that the theory of the multiverse and quantum gravity would be perhaps verified by looking on astronomical scales for how light is affected, which may be a very good place to look, but I think its exciting going the other way, and really getting an understanding of the quantum foam, because that, we can pretty much be sure has to exist. And all our common sense notions suggest that it or something like it must exist. And if it does, then what is its nature, and if its nature is along the lines of the predictions the expanding man model for instance makes, then that way, we can see how during the inflationary period, a superconductive super-fluid for lack of better terms, could form bubbles, which might also mean that the inflationary period, was like a second bang, one where the big suck kicks in after the big bang. Simple low pressure hyper-expansion with no quantum foam to inhibit anything which has mass as it does now. Without that foam, the speed of light is not a barrier because without that foam, essentially there is no space since there would be nothing in there but pure potential space. Infinitely potential space (we hope) We hope the expanding universe will not hit the sides of the glass bell jar that it is contained in, as it were. But clearly from what I have experienced and studied there are other universes as long as you define this universe as being as big as we can see, and as small as we can detect. I don't suppose people might be interested in the notion that rather than the matrix being the result of machine intelligence taking over, but rather that the machines came first. It is easier to conceive of God being created as a cpu, by the coming together of something, that formed switches and began to compute, then over time by interacting with random events, began to think, and plan, and understand, and transcend physical reality or create physical reality as _we know it. That to me is at least a way that God might have been created, which makes sense to me, and in a multiverse of course since this universe is much too small for God the creator as we perceive him to be. It might not be a popular thing to discuss in Damascus, but it seems entirely possible to me that it could have happened that way. Which tells us little about how the multiverse began, but at least it is plausible. Either it had a beginning or it is just our silly humanity and our own perception that things must ultimately have a beginning. It is beyond comprehension to think that they did not, although at the same time, inconcievable to think that anythingh might happen completely out of nothing. So weighing the two options, it seems more plausible to me, that if there is stuff now in the universe, it must always have been there because nothing can come of nothing. The very definition of nothing, tells us that nothing can come of nothing. Hence it is just our own perceptions, an idea only, that 'nothing' in any way is part of a real physical universe or it's inception. There is no such thing as nothing, no matter how you slice it. Anyway, whats my favorite In Our Time Episode? Hmmm... there are just too may good ones to be able to pick a favorite. But this one on the Multiverse, was more along the lines of what I always hoped for when listening to the experts speak about physics. You can never be afraid to mention some silly theory if it makes sense, you just have to couch your phraseology accordingly. The most exciting field of physics today, is the multiverse, because we have been out there in our solar system, and we just are not going to be traveling to other stars that way. Everything is too far away. Not without an invitation, and we listened to every radio station in all directions of space and have not heard a single broadcast. We are it, as far as we can tell, yet we also know, we are not it. Those who can see the magic in the world know that. So the closest way for us to see other people in the multiverse has to be by understanding how it works. That is also how we expect to someday understand time, and maybe time travel, which in itself is like another universe. In time travel you have to have a multiverse. It is our own nature also, to want to create our own little universes, with computer programs like simulators. We are very much involved in the creation process through our works and our ideas that feed evolution. Oh we are special alright, no doubt about that. Finding aliens around every corner would makes us not special. Since we don't, then we are very special indeed. Great Broadcast Melvin, keep up the good interesting doing things. Phonon energy would be a good topic for you. |