- #211
atyy
Science Advisor
- 15,169
- 3,380
vanhees71 said:That may well be true, and maybe after all nature is not Poincare invariant at very large scales where we have no observations yet. All this is, of course, wild speculation, which won't be solved by theory alone but one needs some phenomenological hint to the highly desirable "physics beyond the standard model"!
Yes, but if we think the standard model is an EFT (and we don't know whether the theory above the Landau pole is Poincare invariant or not), then it is also wild speculation to say that the standard model is Poincare invariant - unless you can put a cut off that is both Poincare invariant and gauge invariant?