> But also gravity doesn't have "charge". If you treat GR as a gauge theory, and plug local Poincare symmetry into Noether's theorem, the corresponding conserv

> But also gravity doesn't have "charge". If you treat GR as a gauge theory, and plug local Poincare symmetry into Noether's theorem, the corresponding conserved current and charge you get out are the stress-energy tensor and 4-momentum. It's not exactly the same situation as typical examples of gauge theories, since you need to impose some extra geometric conditions to pick out the Einstein field equations, but I think it's close enough that 4-momentum could reasonably be called gravitational charge.