Motions of the planets put new limit on graviton mass. Range of gravitational field cannot be shorter than 18 trillion kilometreshttps://physicsworld.com/a/motions-of-the-planets-put-new-limit-on-graviton-mass/ …
-
-
Or a fine tuned nonabelian gauge theory
-
Have the temptation to say: the s=2 graviton acquires a little mass not due to Higgs but due to a small "self interaction" (3, 4 vertices) implying a non-abelian or "almost abelian" structure of the theory. In fact gravity can be formulated as a non abelian gauge SL(2,C) theory.
- 3 more replies
New conversation -
-
-
Even (IR) weakly coupled nonabelian theories have coulomb-like potentials at low-energy, afaik
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.