Gluon Colour Shift: Research Project Idea

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    Color Gluon Shift
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Discussion Overview

The discussion centers around the concept of a potential "colour shift" of gluons within hadrons, drawing an analogy to gravitational red shift experienced by photons. Participants explore the implications of color charge in quantum chromodynamics and the nature of red shifts in different contexts.

Discussion Character

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

Main Points Raised

  • One participant proposes the idea of a chromodynamic red shift for gluons analogous to the gravitational red shift of photons, questioning if such a phenomenon could occur within hadrons.
  • Another participant clarifies that the "colors" associated with gluons and quarks are merely labels and do not relate to the concept of color in light.
  • A participant expresses skepticism about the existence of a strong or weak force analog to frequency, which is central to the concept of red shift.
  • A later reply reiterates that gluon's color is a quantum number linked to symmetry relations in the strong force, drawing parallels to quantum mechanics and invariance under rotations.
  • This reply also distinguishes between gravitational red shift and Doppler red shift, emphasizing their different origins related to spacetime and relative motion.

Areas of Agreement / Disagreement

Participants express differing views on the applicability of the concept of red shift to gluons, with no consensus reached on whether a chromodynamic red shift is a valid analogy.

Contextual Notes

Participants note the importance of distinguishing between different types of red shifts and the implications of color charge in quantum chromodynamics, but do not resolve the underlying assumptions or definitions involved in these discussions.

Who May Find This Useful

This discussion may be of interest to those studying quantum chromodynamics, gravitational physics, or the conceptual foundations of particle physics.

silicool
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I had a thought the other day - following from general relativity, a photon experiences a gravitational red shift in frequency. Searching for a research project, I toyed with the idea of a chromodynamic red shift if a photon were to pass through a strong field. However, since the photon has no color charge, i could not see any kind of a shift occurring. Here is the question i pose: could a gluon undergo an analgous "colour shift" within a hadron?
 
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The "colo(u)rs" in reference to gluons and quarks are merely labels. They have nothing to do with color for light. They could just as well be called cat, dog, and pig.
 
Red shift involves a change in frequency of light. I'm not aware of a weak force or strong force analog to frequency.
 
silicool said:
I had a thought the other day - following from general relativity, a photon experiences a gravitational red shift in frequency. Searching for a research project, I toyed with the idea of a chromodynamic red shift if a photon were to pass through a strong field. However, since the photon has no color charge, i could not see any kind of a shift occurring. Here is the question i pose: could a gluon undergo an analgous "colour shift" within a hadron?

Er no, the gluon's colour is not an actual colour, it is a quantumnumber that arises because of certain symmetry relations under which the physics of the strong force must be invariant. This is just like how the L-operator (J, more generally) arises because of invariance of wavefunction-probability under rotations in QM.

Then keep in mind that the cosmological/gravitational red shift is not the same as the Doppler red shift which arises because of relative motion of two bodies. The first arises because of space time expansion. If the star is moving away from us during a rotation around another star for example, we see a Doppler like red shift, but again that is no gravitational redshift that arises because the star moves away with the expanding space time continuum.

regards
marlon
 
Last edited:

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