37 citations · 59 across the 5 of their papers we have counts for
5 papers
Gauge invariant hydrogen atom Hamiltonian
Wei-Min Sun, Xiang-Song Chen, Xiao-Fu Lu +1
For quantum mechanics of a charged particle in a classical external electromagnetic field, there is an apparent puzzle that the matrix element of the canonical momentum and Hamilto…
Reply to the Comment of X. Ji on "Do gluons carry half of the nucleon momentum?" [PRL 103:062001 (2009)]
Xiang-Song Chen, Wei-Min Sun, Xiao-Fu Lü +2
We affirm that the proper momentum defined in [PRL 103:062001 (2009)] does respect exact gauge symmetry and is as measurable as the kinetic momentum. The physical part of the gauge…
Reply to the Comment of X. Ji on "Spin and orbital angular momentum in gauge theories" [PRL 100:232002 (2008)]
Xiang-Song Chen, Xiao-Fu Lü, Wei-Min Sun +2
We reply to the Comment of X. Ji [arXiv:0810.4913] on our paper [PRL 100:232002 (2008)], concerning angular momentum algebra, locality, Lorentz covariance, and measurability of our…
Quantum Version of Gauge Invariance and Nucleon Internal Structure
Fan Wang, Wei-Min Sun, Xiao-Fu Lü
The conflict between cononical commutation relation and gauge invariance, which both the momentum and angular momentum of quark and gluon should satisfy, is clarified. The quantum…
The Calculation of Vacuum Properties from the Global Color Symmetry Model
Hong-shi Zong, Jia-lun Ping, Hong-ting Yang +2
A modified method for calculating the non-perturbative quark vacuum condensates from the global color symmetry model is derived. Within this approach it is shown that the vacuum co…