Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited
| dc.creator | Chen, Xiang-Song | |
| dc.creator | Lü, Xiao-Fu | |
| dc.creator | Sun, Wei-Min | |
| dc.creator | Wang, Fan | |
| dc.creator | Goldman, T. | |
| dc.date | 2008-06-19 | |
| dc.date.accessioned | 2026-07-07T11:33:56Z | |
| dc.date.available | 2026-07-07T11:33:56Z | |
| dc.description | We address and solve the long-standing gauge-invariance problem of the nucleon spin structure. Explicitly gauge-invariant spin and orbital angular momentum operators of quarks and gluons are obtained. This was previously thought to be an impossible task, and opens a more promising avenue towards the understanding of the nucleon spin. Our research also justifies the traditional use of the canonical, gauge-dependent angular momentum operators of photons and electrons in the multipole-radiation analysis and labeling of atomic states; and sheds much light on the related energy-momentum problem in gauge theories, especially in connection with the nucleon momentum. | |
| dc.description | 4 pages, no figure | |
| dc.identifier | https://arxiv.org/abs/0806.3166 | |
| dc.identifier | http://arxiv.org/abs/0806.3166 | |
| dc.identifier | Phys.Rev.Lett.100:232002,2008 | |
| dc.identifier | doi:10.1103/PhysRevLett.100.232002 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198070 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited | |
| dc.type | text |