'A Universe From Nothing' by Lawrence Krauss, AAI 2009

[revo74]

No, not at all! It's just what we expect to happen everywhere from time to time.

So universes give rise to other universes. Do the laws of physics remain the same. Are these new universes essentially clones?

Well, from our perspective, it looks like a microscopic black hole that almost instantly evaporates. But inside this microscopic black hole, the space-time becomes sort of twisted enough that a piece of it pinches off and expands on its own, independent of our universe.

Would this be common sense speculation? After all the entire idea that our Universe is a special virtual particle is highly speculative to begin with.

What evidence or reasoning is there that supports this concept?

 

[Drakkith]

What evidence or reasoning is there that supports this concept?

None other than some math as far as I know. Similar to other different multiverse ideas.

 

[Chalnoth]

So universes give rise to other universes. Do the laws of physics remain the same. Are these new universes essentially clones?

Right now we don't have enough evidence to say for sure, but the general expectation is that the laws can be quite different every time.

Would this be common sense speculation? After all the entire idea that our Universe is a special virtual particle is highly speculative to begin with.

What evidence or reasoning is there that supports this concept?

In general this sort of idea is very much at the frontier of knowledge. The models we have today seem to suggest that this kind of thing is possible, but it's very difficult to say what actually happens in this regime. So for the most part, this should be filed under, "Possible idea. Needs work."

 

[Flatland]

The universe can be flat and still be finite and unbounded.