How are the quarks in a proton or neutron held together?

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Discussion Overview

The discussion centers on the mechanisms by which quarks are held together within protons and neutrons, focusing on the role of gluons and pions in these interactions. Participants explore the nature of the strong nuclear force and its mediators in the context of atomic nuclei.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants assert that gluons are the carriers of the strong nuclear force, which holds protons and neutrons together.
  • Others propose that pions serve as the mediators of the strong force in the nuclear environment, particularly in interactions between nucleons.
  • A later reply clarifies that while pions may mediate interactions between nucleons, gluons are responsible for the strong force interactions among the quarks within protons and neutrons.
  • Participants mention the concept of residual strong force, distinguishing it from the strong force that operates at the quark level.

Areas of Agreement / Disagreement

There is no consensus on whether gluons or pions are the primary mediators of the strong force in the context of nucleons, indicating multiple competing views remain in the discussion.

Contextual Notes

Participants express uncertainty regarding the specific mechanisms of force transfer and the definitions of the forces involved, which may affect the clarity of the discussion.

James Halliday
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I've been trying to find a source for this somewhere, but I always end up with different sources explaining what holds protons and neutrons together in the nucleus of an atom. I know that the gluons hold them together, but I'm not sure exactly how they do this, and what type of transfers occur and such. If anyone could direct me to a source or give me an explanation, that would be greatly appreciated!
 
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James Halliday said:
I've been trying to find a source for this somewhere, but I always end up with different sources explaining what holds protons and neutrons together in the nucleus of an atom. I know that the gluons hold them together, but I'm not sure exactly how they do this, and what type of transfers occur and such. If anyone could direct me to a source or give me an explanation, that would be greatly appreciated!
A forum search would likely be helpful, particularly if you start with the threads linked to at the bottom of this page.
 
Gluons are a carriers of the strong nuclear force, similarly as photons are carriers of the electromagnetic force..
So 'strong nuclear force', one of the four fundamental forces, is the simplest answer.
 
I tend to see the pions as the strong force mediators in the nuclei environment... rather than gluons...
 
ChrisVer said:
I tend to see the pions as the strong force mediators in the nuclei environment... rather than gluons...
Yes that's true when it comes to interactions between neutron to proton, proton to proton, etc, but the strong forces in the proton itself, between the uud quarks, is controlled by gluons.
 
Yup... that's why you are having something like the residual strong force (nuclear force) and the strong force (interactions of quarks and gluons).
 

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