1
عمومی::
نظریه وحدت بزرگ
The two most studied kinds of grand unified theory are based on symmetry groups called SU(5) and SO(10).
As wonderful as super- symmetry and grand unified theories are, they are not, in the view of most theorists, the end of the story.
In fact, there exist very promising theories, called "grand unified theories," in which this is true, and there are even more ambitious theories, called "super- string theories," in which all forces including gravity are unified.
One thing that grand unified theories tend to pre- dict is that the strong nuclear force is much stronger than the weak nuclear force, and that the weak nuclear force is somewhat stronger than the electromagnetic force.
In fact, in the simplest grand unified theory,13 knowing the strength of the weak and strong forces it is possible to calculate what the value of the fine struc- ture constant is.
واژگان شبکه مترجمین ایران