Where Did Big Bang Energy Come From?

this is all very interesting. im finding the string theory to be the winner when it comes to explaining "the world". Even tough it isnt really a true explanation that havent really been tested yet it seems to explain alot of things.
Dont know how well people know the string theory but it actually began with Einstein wanting to unify all the forces to one (just like the magnetic and electric force where found to come from one force; electromagnetic force). He didnt belive in quantum mechanics though so he spent the rest of his life working on something he couldnt solve. Since then with the string theory all the forces exept gravity can be combined to one force. Gravity is the real trickster here since it dont have the same force as the others dont know the exact figure but its really really weak compared to the electromagnetic force.
And thats also the reason why scientist cant go back to the time of big bang, all the calculations break down when gravity is brouth in to the equation. And since big bang is a collection of all the energies we need the solve the string theory (or rather the mystery of gravity) to be able to go back to big bang.Me myself find it very plausible that the big bang were the result of to branes colliding even though it seems like a ad-hoc statement (since it doesnt explain where the energy came from).Another question that sylas might be able to explain. String theory predicts 10 dimensions, the 4 "big" dimension we can see and 6 "curled up" dimensions to small for us to see. But if there are branes big as the whole universe dont they need to exist in a dimension as well? How is it that the brane we live in/on can exist if there is no space outside ou universe? Strings are one-dimension "thingies" and that would imply that the branes exist in another dimension(s)? And what would happen if the universe expanded to the edge of the brane?Dont know how this is relevant to the original question but still related and interesting.
A note also about string theory being the only candidate for explaining these things. Stephen Hawkins seems to believe that the same can be done with special realtivity and quantum mechanics. But that is another question all by it self..

well actually there is only one string theory. It just have five different forms (at least thats what E.Witten says).Yes ST is not verified in any way there are just several indications that it could be right. Some problems that couldnt be solved with relativit/quantum mechanics have been solved by ST suggesting that it could be a better way to go.Yes the idea of one dimension or for that matter anything other than four (a bit of a stretch since i really just know how to relate to the three physical dimensions) is puzzling and hard to get. But hey i cant really understand the quantum world either but its something that seems to be proved to exist. Once upon a time people didnt belive in atoms either or that the world is round.Now they do belive that there could be big strings the sice of galaxies or solarsystems that could be viewed directly or indirectly (by radiaton of sertain particels/energies). But since the only have one dimension and are so big they are hard to spot.Let me also point out that up till 2004 the academic world didnt really acknowledge that there is black matter. But one of the winner of the nobel price(David J. Gross, H. David Politzer and Frank Wilczek shared the price with their Quantum chromodynamics) in physics is saying that there is not only black matter in space but also matter that is neither black och light (this third matter is also taking up some 80% of all the matter in space).
So there are some quite astounding claims being validated. For maybe only 5 years ago he would have been kicked out from all the universities and shunned from the academic world for laying something like that out.
Why should the string theory be any different? (but hey it still isnt proven so im not saying anything either way. its just that it seems plausible to be describing the world)edit: yes i forgot some of what i wanted to write..
Time isnt very easy to understand or explain either. Maybe the reason for this is that its one dimensional? Just a thought.
ST is akin to being a ad-hoc like theory i must admit. But it has a nice ring to it dont you think? Its all in line with Kant and his "the thing in itself". Its consistent with Sofist ideas about the universe being built on music (vibrating strings). It explains why the quantum world is so chaotic and how this relates to space-time being so calm. It simply seems to answers many questions in a nice way.This message has been edited by Kraniet, 06-09-2005 07:06 PM