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Talk:Algebraic quantum field theory

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Somebody more expert in AQFT than I should explain what "the net" and "net monomorphism" refer to. My general sense is that an AQFT defines an allowed set of states on a "net of algebras" but it should pointed out just what that net is before the term is used. There is a monomorphism referred to
630:) it states pretty clearly on the page "The formulation of quantum field theory via these axioms has come to be known as algebraic quantum field theory or AQFT, for short." It also notes the issues with terminology but again looking at the respective pages there ( 638:) you can see algebraic quantum field theory is more appropriate since the latter also can include functorial QFT which is not the main topic of the page. I will also add that recent textbooks in the area all call it algebraic quantum field theory ( 462:
See below concern expressed but no official opposition. The nom, editor STEMster42, as well as editor Polyamorph have solidified their arguments, so this request is granted. Thanks and kudos to editors for your input; everyone
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The entry has only the objective side of AQFT, what is IMHO missing are motives, successes, failures relative standing compared to other approaches. Any feedback whether this would be OK to add? Then I'll try to do it.
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were an equivalence of categories. Regrettably, it is not. The Poincare covariance axiom is not well explained in this article and should be reformulated. Haag's famous paper from the 60s would do nicely as a source.
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I'm somewhat unsatisfied with this article but don't know how to proceed. So I'll start on the discussion pages (in fact I added a link before I got my user account and did a small change on QFT, BTW thanks for
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Also, how does one "pull an action back" to the target category, when the action is defined on the domain category? This does not make any sense, though an equivalent notion could be developed if the functor
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The list of researches at the end along with links to their websites seems promotional to me. So I plan to cut down the list to those researchers who are notable as evidenced by an article on them at WP.
701:) also refer to it solely as Algebraic QFT. Snowmass is a once a decade gathering of particle physicists in the United States where they talk about the future of their field. For more info see: 829: 316: 179: 742:
With the Google Scholar links you see most of the references for Local AQFT are much older than than Algebraic QFT ones which reflects how the terminology has changed.
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Shows far more relevant results for the first query than the second. Furthermore if you want an example from another Knowledge run by academics working in the field (
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The page is written in the language of category theory. I suggest that many people who would be interested in the Haag-Kastler axioms don't speak that language.
725: 140: 728: 824: 130: 83: 819: 185:)? It perhaps looks like the former, from what is said (restriction maps are rarely going to be injective). But I think we should be told. 412:
Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a
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That is completely the wrong tag (technical tag) for asking for improvements on content (which would probably make the article
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Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.
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earlier, maybe that's the net monomorphism, but then this should be stated. Hope someone can do this!
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after discussing it on the closer's talk page. No further edits should be made to this discussion.
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Aren't functors automatically assumed to be covariant by default unless explicitly told otherwise?
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on Knowledge. If you would like to participate, please visit the project page, where you can join
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Yes - but the notation i-sub-stuff wasn't introduced explicitly, making it harder to suss out.
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I agree completely. Let's hope there'll be more progress towards this in the next 18 months !
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https://www.scientificamerican.com/article/physicists-struggle-to-unite-around-future-plans/
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FWIW, Haag and Kastler did not present their axioms in the language of category theory.
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Some quick searches says otherwise, so I do not think this is uncontroversial.
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is right, particularly as it is the accepted term for modern textbooks.
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The entry doesn't read as physics but as pure mathematics. Of course an
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To add a further authoritative reference, recent Snowmass papers (
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https://www.google.com/search?q=algebraic+quantum+field+theory
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has a strong mathematical side, but there's something beyond.
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I did google and gscholar searches of the strings in quotes:
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covariant, or contravariant (as it would be in the case of a
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https://www.google.com/search?q=local+quantum+field+theory
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https://link.springer.com/book/10.1007/978-3-319-21894-6
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https://link.springer.com/book/10.1007/978-3-319-25901-7
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https://link.springer.com/book/10.1007/978-3-319-21353-8
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https://ncatlab.org/nlab/show/local+quantum+field+theory
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May I ask what did you search? Searching both on Google:
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does AQFT stand for axiomatic quantum field theory?
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I removed it. -- 7: 95:This article is within the scope of 723:Google "Local quantum field theory" 38:It is of interest to the following 632:https://ncatlab.org/nlab/show/AQFT 220:QFT, though it is also axiomatic. 14: 802:The discussion above is closed. 699:https://arxiv.org/abs/2210.03128 695:https://arxiv.org/abs/2203.08053 537:) 10:46, 20 December 2022 (UTC) 427: 82: 72: 51: 20: 825:Mid-importance physics articles 395:Requested move 20 December 2022 135:This article has been rated as 527:Algebraic quantum field theory 444:Algebraic quantum field theory 311:{\displaystyle {\mathcal {A}}} 174:{\displaystyle {\mathcal {A}}} 1: 794:14:24, 20 December 2022 (UTC) 752:15:19, 20 December 2022 (UTC) 738:14:49, 20 December 2022 (UTC) 714:14:16, 20 December 2022 (UTC) 689:13:16, 20 December 2022 (UTC) 658:12:38, 20 December 2022 (UTC) 609:12:10, 20 December 2022 (UTC) 589:14:23, 20 December 2022 (UTC) 569:This comment thread began at 562:14:23, 20 December 2022 (UTC) 489:19:10, 28 December 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