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1 vote

How is the mass distributed in ordinary matter?

It is correct that the current light quark masses contribute only about 1% of the nucleon mass, and the main contribution is coming from the strong interaction. How one decomposes this contribution to ...
QuarkMatterGames's user avatar
1 vote

Visualization of a gauge field with non-null winding number

The proper answer is that fully visualizing this winding would involve imagining the winding on a 3-sphere. Just in case someone reading this doesn't know why that is, it's because the boundary ...
11zaq's user avatar
  • 550
0 votes

$SU(3)$ color charge

It should be in your text. The QCD lagrangian, locally SU(3) symmetric, is also, a fortiori, globally SU(3) symmetric. The color charge is the Noether charge of this global symmetry. In fact, you may ...
Cosmas Zachos's user avatar
3 votes

Can an electron be produced inside a proton?

Yes, the proton structure includes electrons and positrons, but their contribution is negligible because electromagnetism is so much weaker than the strong interaction that produces the proton's quark-...
David Bailey's user avatar
  • 11.4k
3 votes

Can an electron be produced inside a proton?

Simply put, if you are thinking of "being in the proton" as simply having a ghostly appearance in the form of loop diagrams with processes like $\gamma\to e^\pm$, sure nothing prevents such ...
Mike's user avatar
  • 31
4 votes

What makes electric and magnetic fields in Yang-Mills theories gauge co-variant?

In YM theory, the field strength $G$ is not invariant under gauge transformations. Indeed, under the gauge transformation $$ A_{\mu} \to \Omega(x) A_{\mu} \Omega^{-1}(x) + i \Omega(x) \partial_{\mu} \...
Gabriel Ybarra Marcaida's user avatar

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