Gauge Invariance, Lorentz Covariance and Canonical Quantization in Nucleon Structure Studies

doi:10.1007/s00601-015-0969-9

	Gauge Invariance, Lorentz Covariance and Canonical Quantization in Nucleon Structure Studies
	Wang, Fan 1; Wong, C. W.2; Chen, X. S.3; Sun, W. M.1; Zhang, P. M.4
刊名	FEW-BODY SYSTEMS
	2015-09-01
卷号	56 页码:249-255
ISSN号	0177-7963
DOI	10.1007/s00601-015-0969-9
英文摘要	Different operators of quark and gluon momenta, orbital angular momenta, and gluon spin have been used in nucleon structure studies. Their precise meaning is reviewed with respect to gauge invariance, Lorentz covariance and canonical quantization rules. The advantage and disadvantage of different definitions are analyzed. We concentrate on our gauge invariant decomposition of the total momentum and angular momentum into quark and gluon parts based on the separation of the gauge potential into a gauge invariant (covariant) physical part and a gauge dependent pure gauge part. The Lorentz covariance and measurability of our operators are demonstrated.
资助项目	NSFC[1175215] ; NSFC[11175088] ; NSFC[11035006]
WOS关键词	ORBITAL ANGULAR-MOMENTUM ; SPIN ; DECOMPOSITION ; ELECTRON ; LIGHT
WOS研究方向	Physics
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000360435800003
资助机构	NSFC
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40553]
专题	中国科学院近代物理研究所
通讯作者	Wang, Fan
作者单位	1.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China 2.Univ Calif Los Angeles, Dept Phys, Los Angeles, CA 90024 USA 3.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fan,Wong, C. W.,Chen, X. S.,et al. Gauge Invariance, Lorentz Covariance and Canonical Quantization in Nucleon Structure Studies[J]. FEW-BODY SYSTEMS,2015,56:249-255.
APA	Wang, Fan,Wong, C. W.,Chen, X. S.,Sun, W. M.,&Zhang, P. M..(2015).Gauge Invariance, Lorentz Covariance and Canonical Quantization in Nucleon Structure Studies.FEW-BODY SYSTEMS,56,249-255.
MLA	Wang, Fan,et al."Gauge Invariance, Lorentz Covariance and Canonical Quantization in Nucleon Structure Studies".FEW-BODY SYSTEMS 56(2015):249-255.