How do gluons bind quarks together?

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Discussion Overview

The discussion revolves around the mechanisms by which gluons bind quarks together, exploring both theoretical and conceptual aspects of quantum chromodynamics (QCD). Participants examine the nature of gluon exchange, its implications for quark confinement, and comparisons to electromagnetic interactions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions how gluon exchange leads to the binding of quarks, suggesting a deeper inquiry into the linear potential in non-relativistic quark interactions.
  • Another participant draws a parallel between gluon exchange and photon exchange, asking how virtual gluons can transmit an attractive force.
  • A different viewpoint asserts that gluon exchange can result in both attractive and repulsive forces, challenging the notion that gluons exclusively bind quarks together.
  • Reference is made to Richard Feynman's comparison of gluons and photons, highlighting the complexity of calculating the coupling constant for gluons compared to that for photons.

Areas of Agreement / Disagreement

Participants express differing views on the nature of gluon exchange and its effects, indicating that multiple competing interpretations of the binding mechanism exist. The discussion remains unresolved regarding the specifics of how gluons function in quark interactions.

Contextual Notes

Some assumptions about the nature of forces transmitted by gluons and the implications of their exchange are not fully explored, leaving gaps in understanding. The discussion also reflects varying levels of familiarity with quantum chromodynamics and related concepts.

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How does the exchange of gluons between quarks "bind" them together?
 
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Unredeemed said:
How does the exchange of gluons between quarks "bind" them together?
Your question can be understood at several levels. The way I understand it, it may be re-phrased
why does the potential grow linearly ?
in a non-relativistic picture of quark-quark interaction via gluon exchange.

All the way up to
what is the physical mechanism for confinement of light quarks in Nature ?
there are many other possible interpretations.
 
As in, why does the fact that virtual gluons pass between quarks constantly mean that they stay together as neutrons and protons?

In other words, how does the virtual gluon transmit an attractive force?
 
Unredeemed said:
how does the virtual gluon transmit an attractive force?
It does not. Gluon exchange can result in both attractive and repulsive interactions.

You indeed may want to review how the photon transmit electromagnetic interaction.
 
Unredeemed said:
How does the exchange of gluons between quarks "bind" them together?

Though I can't say I fully understand it myself, Richard Feynman compares gluons and chromodynamics with photons and electrodynamics, talking about a coupling constant referred to as j for photons and g for gluons, which seems relative to amplitude, in the book 'QED: The Strange Theory of Light and Matter', g being much larger and more complex to calculate than j.
 
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