198 citations · 396 across the 4 of their papers we have counts for
6 papers · 1 filter
Reply to the Comment on "Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited" [PRL 100:232002 (2008)]
Xiang-Song Chen, Xiao-Fu Lü, Wei-Min Sun +2
This is a Reply to the Comment [arXiv:0807.0699] on our paper [PRL 100:232002 (2008)].
Spin and orbital angular momentum in gauge theories: Nucleon spin structure and multipole radiation revisited
Xiang-Song Chen, Xiao-Fu Lü, Wei-Min Sun +2
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…
Testing the correctness of the Poynting vector \vec E\times\vec B as the momentum density of gauge fields
Xiang-Song Chen, Xiang-Bai Chen, Wei-Min Sun +1
Following our recent finding that the renowned formula is not the correct density for the electromagnetic angular momentum, here we examine the…
Spin and orbital angular momentum in gauge theories (I): QED and determination of the angular momentum density
X. S. Chen, X. F. Lü, W. M. Sun +2
This two-paper series addresses and fixes the long-standing gauge invariance problem of angular momentum in gauge theories. This QED part reveals: 1) The spin and orbital angular m…
How does baryon magnetic moment relate to its spin structure
Xiang-Song Chen, Di Qing, Fan Wang
A model independent, field theoretical relation between baryon magnetic moment and its spin structure is derived and it is explained why constituent quark model is a good approxima…
Gauge invariance and hadron structure
Xiang-Song Chen, Fan Wang
We prove that the {\em gauge dependent} gluon spin, gluon and quark orbital angular momenta operators have {\em gauge invariant} expectation values on hadron states with {\em defin…