Matches in SemOpenAlex for { <https://semopenalex.org/work/W3104711934> ?p ?o ?g. }
- W3104711934 endingPage "1430012" @default.
- W3104711934 startingPage "1430012" @default.
- W3104711934 abstract "Is gauge-invariant complete decomposition of the nucleon spin possible? Although it is a difficult theoretical question which has not reached a complete consensus yet, a general agreement now is that there are at least two physically inequivalent gauge-invariant decompositions (I) and (II) of the nucleon. %The one is a nontrivial gauge-invariant %generalization of the Jaffe-Manohar decomposition. %The other is an extension of the Ji decomposition, which allows %a gauge-invariant decomposition of the total gluon angular %momentum into the intrinsic spin and orbital parts. In these two decompositions, the intrinsic spin parts of quarks and gluons are just common. What discriminate these two decompositions are the orbital angular momentum parts. The orbital angular momenta of quarks and gluons appearing in the decomposition (I) are the so-called mechanical orbital angular momenta, while those appearing in the decomposition (II) are the generalized (gauge-invariant) canonical ones. By this reason, these decompositions are also called the mechanical and canonical decompositions of the nucleon spin, respectively. A crucially important question is which decomposition is more favorable from the observational viewpoint. The main objective of this concise review is to try to answer this question with careful consideration of recent intensive researches on this problem." @default.
- W3104711934 created "2020-11-23" @default.
- W3104711934 creator A5060503961 @default.
- W3104711934 date "2014-04-08" @default.
- W3104711934 modified "2023-10-14" @default.
- W3104711934 title "Is gauge-invariant complete decomposition of the nucleon spin possible?" @default.
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