See, one of the up-and-coming theories in cosmology is the Multiverse Theory, as discussed in Michio Kaku's "Parallel Worlds" book. See, the idea is that our universe isn't a singular one, but is like a bud on a vine. Our universe spawned from another universe, kind of like how a tadpole grows a leg - and, from our universe, one (possibly multiple) other universi (I guess that would be the plural to "universe") will spawn from ours. This cycle goes on infinitely, always creating new universi. This, in a nutshell, is the Multiverse theory.
My idea comes in here. Black holes are, what many physicists consider, a singularity. That is, the matter that these objects swallow is compressed down into a really, really small point. It is this small point that generates the gravitational force driving the black hole in its quest for consuming matter. Most of you, hopefully, are familiar with the concept of Hawking Radiation.
[Sidenote: If you don't have a degree in mathematics or physics, don't even bother looking at the math. Your face might implode upon itself.]
So, if you're not familiar with Hawking radiation, I'll try to sum it up here, as it appears in Stephen Hawking's The Universe in a Nutshell. The British physicist Stephen Hawking said that black holes - these things with immense gravitational attraction - would evaporate into nothingness. But... how? Well, it lies with virtual particle pairs. See, the very edge of a black hole is called the event horizon - at this point, if you're beyond the event horizon, you will most likely not escape the gravity of the black hole. Now, from the energy of this event horizon, the quantum fluctuations create virtual particle pairs. Now, the particle and antiparticle pair should annihilate each other, but one particle gets sucked back into the hole, and the other is launched into space. Now, remember that matter is just energy in another form, so energy has escaped from a black hole! A black hole is going to keep doing this, until it evaporates.
Now, here my idea begins to defy convention. First of all, what if the matter eaten by a black hole lies on the fabric of spacetime? This singularity could lie on the very edge of our "manifold", or set of dimensions. "The edge of our universe," if you will. Now, what if, instead of the black hole (all the matter it consumed) evaporating... what if the black hole's "presence" in our manifold is evaporating?

To illustrate what I mean, look at the above picture. Now, my idea states that it's not the matter in the middle evaporating, but the entire top half of the black hole. Now, once the ties it has to our manifold disappear, the gateway between here and there collapses, and the singularity lying on the edge of our spacetime then explodes into the empty space outside our universe, creating a Big Bang and another universe. The Multiverse theory realized.
Kinda nifty!
Now, I know that this has some glaring problems. A prime example is my idea of "the black hole's presence in our manifold." Well, a black hole isn't a thing with a cone of material or a material presence, but an effect caused by the warping of spacetime. So, exactly how this would "evaporate," I don't know.
If anyone has any ideas, questions, comments, input... it's all welcome!
Though, do be civilized.

