Revision as of 10:42, 14 August 2024 edit OpenScience709 (talk \| contribs) Extended confirmed users 4,004 edits m →Proposed solutions: Correct modification; thanks to anon user. Not sure how to include fact that these models are quite finicky and tricky, which was the original idea. ← Previous edit		Revision as of 17:34, 4 September 2024 edit undo JazzyRightdoer (talk \| contribs) 372 edits m made a better link to a different page Next edit →
Line 2: The '''strong CP problem''' is a question in [[particle physics]], which brings up the following quandary: why does [[quantum chromodynamics]] (QCD) seem to preserve [[CP violation#CP-symmetry\|CP-symmetry]]? In particle physics, '''CP''' stands for the combination of [[charge ~~(physics)\|charge]] [[C-symmetry\|~~conjugation symmetry]] (C) and [[Parity (physics)\|parity]] symmetry (P). According to the current mathematical formulation of quantum chromodynamics, a [[CP violation\|violation of CP-symmetry]] in [[strong interaction]]s could occur. However, no violation of the CP-symmetry has ever been seen in any experiment involving only the strong interaction. As there is no known reason in QCD for it to necessarily be conserved, this is a "[[Fine-tuning (physics)\|fine tuning]]" problem known as the '''strong CP problem'''. The strong CP problem is sometimes regarded as an [[List of unsolved problems in physics\|unsolved problem in physics]], and has been referred to as "the most underrated puzzle in all of physics."<ref>{{cite conference \|first=T. \|last=Mannel \|title=Theory and Phenomenology of CP Violation \|book-title=Nuclear Physics B

Strong CP problem: Difference between revisions