4 ms·
> Just giving the force law hardly counts as interpret-ability. You probably know that the 1/r^2 in the force law comes from the dimensionality of space. That i
by dataflow 2y ago
> Just giving the force law hardly counts as interpret-ability. You probably know that the 1/r^2 in the force law comes from the dimensionality of space. That is the interpretation.
I used to think the same, but don't the weak and strong forces decay differently?
- nathan_compton 2y agoSort of, but the same sort of thinking is involved in both at a fundamental level. Most of the coefficients in a QFT expansion can almost be guessed by just considering dimensional analysis. Like the "force laws" of those two theories derive from the dimensionality of space time, the symmetry group involved (which is itself just an irreducible representation of rotations in the spacetime) and then some details having to do with symmetry breaking and the fact that gluons carry charge. Not that all of that is simple, but it doesn't invalidate the logic which gives us the 1/r^2 force law in the classical regimes of gravity and E&M.