Questions tagged [quantum-chromodynamics]
Quantum-ChromoDynamics (QCD) is the quantum field theory believed to describe the strong nuclear force.
1,102
questions
-3
votes
3
answers
207
views
Misunderstanding the dimension of QCD
From my point of view, the definition of the tension tensor is contradictory.
$$F_{\mu \nu}=\partial_{\mu} A_{\nu}-\partial_{\nu} A_{\mu} +ig[A_{\mu},A_{\nu}]$$
$$[A_{\mu}]=\frac{1}{cm \times g};[F_{\...
-3
votes
1
answer
135
views
Gluon field calculations [closed]
How do I calculate the qcd covariant derivative I can’t figure out the value of the gluon field I have tried many sites on the internet
This equation shows the covariant derivative:
$$
D_\mu = \...
-3
votes
2
answers
308
views
Why is a quarkonium any different from a meson?
Quarkonium states are bound states of a quark-antiquark pair but so do the mesons. What is the difference between a quarkonium (e.g., charmonium, and bottomonium) and a meson then? Why use a separate ...
- 11.8k
-4
votes
1
answer
82
views
Yang-Mills mass gap caused by gluonballs or because dark matter WIMPs?
Yang-Mills quantum field theory predicts the existence of the lightest massive Bosonic (i.e. integer spin) particle.
This massive Boson will be much lighter than the $W$ and $Z$ Boson and therefore ...
- 4,170
-5
votes
1
answer
83
views
What is the speed of gluons inside a proton or neutron? [closed]
I have got the following answer to the above question from ChatGPT 4. Is this answer correct?
Any more new information that can added as an answer?
"The propagation speed of gluons inside a ...
- 4,170
-8
votes
2
answers
891
views
Cramer's rule, Origin of Quarks Fractional electric charge? [closed]
In linear algebra, Cramer's rule is an explicit formula for the solution of a system of linear equations with as many equations as unknowns.
2u+1d=1
1u+2d=0
$$a_1d+b_1u=c_1$$ $$a_2d+b_2u=c_2$$ $$u=\...
- 1,025
-14
votes
2
answers
3k
views
Could the fractional model of Quarks electric charge turn out to be false? [closed]
The delta baryons (also called delta resonances) are a family of subatomic hadron particles which have the symbols $\Delta^{++}$, $\Delta^{+}$, $\Delta^{0}$, and $\Delta^{−}$ and electric charges +2, +...
- 1,025