I recall watching Hawking Universe, he talked about how a very few and very slight irregularities in distribution of newly created sub atomic particles, resulted in the universe we live in. He mentioned that had the explosion resulted in uniformly distributed particles, gravity would have just all kept them apart and the universe would not have become what it is now.
So, we could assume that in a 3d space 1d time such as our universe, the laws would be the same.
As an aside from your question, what I find baffling, is that we are still part of the initial explosion, since the universe is still evolving, and perhaps the end of the explosion could be the end of the universe.
What is also quite baffling is strange things like dark energy and how it affects the evolution of the universe. And even more baffling is the possibility that, again, since the universe is still evolving, we do not know what it might evolve into in billions of years from now. I mean, the fact that we exist as a biological spices and that other forms of life might very well exist on other planets, does not necessarily mean that we are all the "be all and end all" of the universe's evolution into "something else".
Back to the question, what would happen in a universe with one more spatial dimension than ours could be perceived as different because of that extra spatial direction.
Vasek the quantum guy! =)
Hey, you always blow my mind. But about your neutron beam and just for the sake of looking at it from a different perspective. Doesn't their going trough the slit itself cause them to spread out?
I am not saying that Newton's law applies in microscopic scale, but perhaps it is our perception of the same law that applies.
I am not as knowledgeable as you in QM but, isn't tiny stuff like also connected to 2d space?
What is the value of a cube in 2d?
What is the value of pi in 1d?
Our perceptions of the physical world and the measurements we use to describe it could all be linked together, no?
I was not going to add anything, but just for fun, think of an infinite static universe that would contain an infinite amount of uniformly distributed “conscious” dots with same mass. The very notion of gravity would be perceived and interpreted differently for these dots, for they would think of it as a force that keeps them at a certain distance from one another, they could conclude that gravity is a balancing force.
The notion of time would need a different interpretation, it would just be there to allow the entities to think and exchange “thoughts”, hard to say if they would have such thing as the notion for speed or displacement, except as imaginary. But then again, perhaps they could have “imaginary” concepts (imaginary, for them), which are part of our physical reality, that could allow these dot entities to derive our gravity, as we know it in our universe, and ascribe it another name, like "super imbalance" or something.
Perhaps they would see it as an "new and mysterious" potential property for gravity (that they percieve as balance) in their universe, they could come up with a mathematical proof for “skipping” over to another entity 1 or many dots away, although it would be impossible for them to achieve it, they might very well have a cold hard mathematical proof, that displacing one dot could, change the entire configuration of their universe.
So it is a matter of interpretation of whatever information and theoretical models that are provable with math, the entities in a different universe would have.
Conclusions, things may not be what they appear to be ;)