are forces mixed together?

[Rothiemurchus]

The graviton is postulated to be spin 2.
But if a spin 2 became 2 x spin 1 sometimes then
the force of gravity could become the electric force.
And similarly 2 x spin 1 could become 1 x spin 2 sometimes.
How would the effects of such transformations be detected in
the laboratory?
The force of gravity between two masses would be larger than predicted
by relativity theory wouldn't it because there would be more spin 2 around than expected?

[marlon]

This is an easy picture. There are many other conservation laws that have to be respected when interactions occur. eg energy conservation, conservation of baryonnumber and lepton number, conservation of isospin etc...

regards
marlon

[humanino]

Initially forces do not mix together, by definition. Then renormalisation includes all the fluctuations you propose. And finally renormalized interaction do not mix together either. So basically : no.

[Rothiemurchus]

Paul Dirac said a theory that is right should not need to be renormalised.

[humanino]

I agree with him. That can't be a QFT.

[humanino]

Be careful : believing we will ultimately find a theory that works at arbitrary energy is a religion. Believing Nature is not chaos is a religion too, but much less crazy.

[Haelfix]

I agree with him. That can't be a QFT.

It could be if we could just solve the damn path integral directly, or figure out a way to borel resum it.

In a sense, we might already have the master equation (with suitable caveats). We just don't know what to do with it.

Then again, thats probably not the full story either, depending on who you talk too.

[humanino]

Yes right, thanks Haelfix for the precision ! Zee in his (not-too-high-level-)book claimed the statement I just repeated, in the introduction to renormalization chapter, but he also indicated earlier in the book that computing non-trivial path integrals could be considered as one of the "holy-graal"