# Is there a relation between the number of dimensions of space time and the number of fundamental forces?

1. Is there a relation between the number of dimensions of space time and the number of fundamental forces?

2. Also, did the universe always have 4 space time dimensions?

3. And could there exist a world where the electromagnetic field was broken such that there would be 5 fundamental forces?

4. And a last question, because the electromagnetic field is $U(1)$, the Weak $SU(2)$ and the Strong $SU(3)$, is the gravitational field $SU(4)$?

Sorry for the many questions but they are somewhat connected, so I get somethings straight.

• – Qmechanic Oct 27 '16 at 19:19