QCD Meson Potential: Physics Community Agreement?

  • Context: Graduate 
  • Thread starter Thread starter BigD
  • Start date Start date
  • Tags Tags
    Qcd
Click For Summary

Discussion Overview

The discussion centers on the potential forms for the strong force in mesons, specifically whether there is a consensus in the physics community regarding the approximate potential function. The scope includes theoretical considerations and references to experimental validation.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant inquires about the current consensus on the potential function for the strong force in mesons, referencing older literature.
  • Another participant mentions the "Cornell potential," which is expressed as V=-g^2/r + ar, noting that sometimes a ln(r) term is used instead of ar.
  • A follow-up question asks whether experimentalists have determined which potential fits better.
  • One participant expresses skepticism about the existence of confinement, stating that the Cornell potential is speculative and that lattice simulations are not convincing.

Areas of Agreement / Disagreement

Participants do not appear to agree on the validity or acceptance of the Cornell potential, and there is uncertainty regarding the experimental evidence for confinement in mesons.

Contextual Notes

The discussion highlights limitations in current understanding, including the speculative nature of the potential functions and the inconclusiveness of lattice simulations.

BigD
Messages
14
Reaction score
0
Has the physics community come to an agreement on the form an approximate potential function would take for the strong force in a meson?

I am just starting out as a physics major, but I have been reading a few books on basic quantum theory and QFT. I am currently reading a book on particle physics that was written in the 80's, and it talks about several forms that the potential could take in a meson such as a charm-anticharm. I would greatly appreciate it if anyone could provide some up to date information on this subject.
 
Physics news on Phys.org
The so called "Cornell potential" has been used. It looks like
V=-g^2/r + ar. Sometmes a ln(r) is used instead of ar.
 
Thank you.

Have experimentalists been unable to determine which of the two fits better as of yet?
 
Nobody has been able to show on paper that confinement does exist. It is all speculation at this point that the potential function is given by the Cornell potential or something similar to it. Well, you have lattice simulations but they are not very convincing, at least to me.
 

Similar threads

What is the CKM element for J psi and phi meson
  • · Replies 0 ·
Replies
0
Views
1K
Graduate New ideas on confinement and meson masses from Brazil
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Is It Known For Sure Infinites In QFT Are Caused Using a Continuum?
  • · Replies 3 ·
Replies
3
Views
1K
Graduate Quarkonium: General Information
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Is a Hadron a Quasiparticle in Condensed Matter Physics?
  • · Replies 33 ·
2
Replies
33
Views
4K
Graduate What New Experiments, If Any, Would Help Determine Light Quark Masses?
  • · Replies 46 ·
2
Replies
46
Views
8K
Graduate Understanding that QCD is not CP invariant
  • · Replies 38 ·
2
Replies
38
Views
6K
High School Time Dilation Problem with Mesons
  • · Replies 39 ·
2
Replies
39
Views
8K
Graduate Ground state energy of cube-like potential wells
  • · Replies 3 ·
Replies
3
Views
2K
Can Returning to Academia Reignite a Former Consultant's Passion for Science?
  • · Replies 1 ·
Replies
1
Views
2K