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I can see that there are a number of experts here on the whole topic of QCD and perhaps someone can comment - either here in the discussion or possibly integrated in the body of the article itself - regarding some criticism of QCD that I read about rather recently in a book. The author is trying to present a new theory based on magnetic monopoles (not Dirac monopoles) rather than the Quark-Gluon / color-charge model of QCD, and in the process presents a number of compelling questions about QCD, including (just paraphrasing from what I remember from the book):
I don't have much of a background in physics at all- I just stumbled on the book at one point and recall that he made a compelling argument against QCD and for his own monopole model, which he claims - quite convincingly- answers all of the questions that he raised against QCD. Frankly, I think that it would be great if we could collect all of the arguments (with refutations) in either a section of the article or in a separate article. Any thoughts would be welcome and appreciated. Thanks, Michael. 209.250.153.11 ( talk) 18:50, 11 May 2012 (UTC)
As far as I understand this, these are principal fibre bundles on a space-time base space. The fibres in the electrodynamical case are SU(1) (i.e. the unity circle) with sections the electrodynamical vector potentials; In chromodynamics they are SU(3), the sections being tensor potentials with values in complex three-dimensional space, the self-representation of SU(3). So there are three principal fibre bundles: Besides these two there is the tangent (or cotangent) bundle, in which general relativity takes place. If that is so, there is the question: What changes if we change the base space from one cosmological model to another? And how fits unification and grand unification into these mathematical structures? Local symmetries are invariance transformations in the tangent bundle, global ones are transformations in the whole multi-dimensional manifold. — Preceding unsigned comment added by 141.20.6.200 ( talk) 10:35, 28 July 2012 (UTC)
I split content from gluon field strength tensor to gluon field because the two fields are different, and there is lots of literature on these fields, so maybe separate articles could develop the mathematics carefully. We have electromagnetic four-potential and electromagnetic tensor, so why not similarly for the strong interaction? If there are strong (excuse pun) opinions to explain the fields together (as it happened with position and momentum space) then we can always merge.
Concerning the section quantum chromodynamics#Lagrangian: the seems to be exactly the same as for the gluon field, so I'm changing the notation, just as an IP did here. Posting here to for others to comment in advance.
Thanks for any corrections highlighted in advance. M∧Ŝ c2ħε Иτlk 21:57, 16 October 2013 (UTC)
See this cut and paste. This article gives the tensor expression for the Lagrangian and the gluon field strength:
which is enough - we don't need the differential forms... M∧Ŝ c2ħε Иτlk 21:18, 20 October 2013 (UTC)
If we rotate the color axis among a neutrally colored quark group, everything remains as it was for the color connection field is a gauge symmetric field. Some scientists claim that at a large number of rotations some discrepancies might be revealed, and that will help us understand more about gravity and the relationship between the strong and the electroweak force. We have to design that experiment and make sure that in the process we do not cancel out these statistical discrepancies. One proposal is that when different quark groups rotate close to each other, few quarks might briefly become part of the other group or even part with virtual quarks, and especially that virtual quarks aren't totally symmetrical because they occur via complex virtual particle interactions that include the weak force (even indirectly, as not a first direct step of the interaction sequence) with it's broken symmetries.
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History section not clear on : Was the proposal of SU(3) in 1965 the final part of QCD theory ? Are the calculation methods (eg lattice QCD?) considered part of QCD ? Then it took until quark evidence from SLAC in 1969 for QCD (or quarks?) to be accepted generally ? - Rod57 ( talk) 20:03, 2 September 2016 (UTC)
I am not sure that the diagram in this article is correct 45.52.50.120 ( talk) 18:31, 27 January 2023 (UTC)
I believe near light speed velocity is critical for the creation of mass.
It is necessary for several reasons: 1) to produce a field capable of both building strength and causing a mass effect.
2) to have a special prolonged interaction with passing field intensity calls for motion near the speed of the field.
There used to be many sources of quark speed info but today they seem to be harder to find. I have heard that the speed is within the range of 0.8C and 99.995C .
Bill field pulse ( talk) 22:18, 2 February 2024 (UTC)
This is the
talk page for discussing improvements to the
Quantum chromodynamics article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
Archives: 1 |
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
![]() | Text and/or other creative content from Quantum chromodynamics was copied or moved into Gluon field strength tensor with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
I can see that there are a number of experts here on the whole topic of QCD and perhaps someone can comment - either here in the discussion or possibly integrated in the body of the article itself - regarding some criticism of QCD that I read about rather recently in a book. The author is trying to present a new theory based on magnetic monopoles (not Dirac monopoles) rather than the Quark-Gluon / color-charge model of QCD, and in the process presents a number of compelling questions about QCD, including (just paraphrasing from what I remember from the book):
I don't have much of a background in physics at all- I just stumbled on the book at one point and recall that he made a compelling argument against QCD and for his own monopole model, which he claims - quite convincingly- answers all of the questions that he raised against QCD. Frankly, I think that it would be great if we could collect all of the arguments (with refutations) in either a section of the article or in a separate article. Any thoughts would be welcome and appreciated. Thanks, Michael. 209.250.153.11 ( talk) 18:50, 11 May 2012 (UTC)
As far as I understand this, these are principal fibre bundles on a space-time base space. The fibres in the electrodynamical case are SU(1) (i.e. the unity circle) with sections the electrodynamical vector potentials; In chromodynamics they are SU(3), the sections being tensor potentials with values in complex three-dimensional space, the self-representation of SU(3). So there are three principal fibre bundles: Besides these two there is the tangent (or cotangent) bundle, in which general relativity takes place. If that is so, there is the question: What changes if we change the base space from one cosmological model to another? And how fits unification and grand unification into these mathematical structures? Local symmetries are invariance transformations in the tangent bundle, global ones are transformations in the whole multi-dimensional manifold. — Preceding unsigned comment added by 141.20.6.200 ( talk) 10:35, 28 July 2012 (UTC)
I split content from gluon field strength tensor to gluon field because the two fields are different, and there is lots of literature on these fields, so maybe separate articles could develop the mathematics carefully. We have electromagnetic four-potential and electromagnetic tensor, so why not similarly for the strong interaction? If there are strong (excuse pun) opinions to explain the fields together (as it happened with position and momentum space) then we can always merge.
Concerning the section quantum chromodynamics#Lagrangian: the seems to be exactly the same as for the gluon field, so I'm changing the notation, just as an IP did here. Posting here to for others to comment in advance.
Thanks for any corrections highlighted in advance. M∧Ŝ c2ħε Иτlk 21:57, 16 October 2013 (UTC)
See this cut and paste. This article gives the tensor expression for the Lagrangian and the gluon field strength:
which is enough - we don't need the differential forms... M∧Ŝ c2ħε Иτlk 21:18, 20 October 2013 (UTC)
If we rotate the color axis among a neutrally colored quark group, everything remains as it was for the color connection field is a gauge symmetric field. Some scientists claim that at a large number of rotations some discrepancies might be revealed, and that will help us understand more about gravity and the relationship between the strong and the electroweak force. We have to design that experiment and make sure that in the process we do not cancel out these statistical discrepancies. One proposal is that when different quark groups rotate close to each other, few quarks might briefly become part of the other group or even part with virtual quarks, and especially that virtual quarks aren't totally symmetrical because they occur via complex virtual particle interactions that include the weak force (even indirectly, as not a first direct step of the interaction sequence) with it's broken symmetries.
Hello fellow Wikipedians,
I have just modified 2 external links on Quantum chromodynamics. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
{{
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).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
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have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
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(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 12:43, 21 July 2016 (UTC)
History section not clear on : Was the proposal of SU(3) in 1965 the final part of QCD theory ? Are the calculation methods (eg lattice QCD?) considered part of QCD ? Then it took until quark evidence from SLAC in 1969 for QCD (or quarks?) to be accepted generally ? - Rod57 ( talk) 20:03, 2 September 2016 (UTC)
I am not sure that the diagram in this article is correct 45.52.50.120 ( talk) 18:31, 27 January 2023 (UTC)
I believe near light speed velocity is critical for the creation of mass.
It is necessary for several reasons: 1) to produce a field capable of both building strength and causing a mass effect.
2) to have a special prolonged interaction with passing field intensity calls for motion near the speed of the field.
There used to be many sources of quark speed info but today they seem to be harder to find. I have heard that the speed is within the range of 0.8C and 99.995C .
Bill field pulse ( talk) 22:18, 2 February 2024 (UTC)