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Form factors in RQM approaches: Constraints from space-time translations
Desplanques, B; Dong YB(董宇兵); Dong, YB
2008
发表期刊EUROPEAN PHYSICAL JOURNAL A
卷号37期号:1页码:#REF!
通讯作者Desplanques, B (reprint author), Univ Grenoble 1, LPSC, CNRS, IN2P3,INPG, F-38026 Grenoble, France.
文章类型Article
摘要Different relativistic quantum-mechanic approaches have recently been used to calculate properties of various systems, form factors in particular. It is known that predictions, which most often rely on a single-particle current approximation, can lead to predictions with a very large range. It was shown that accounting for constraints related to space-time translations could considerably reduce this range. It is shown here that predictions can be made identical for a large range of cases. These ones include the following approaches: instant form, front form, and "point form" in arbitrary momentum configurations and a dispersion-relation approach which can be considered as the approach which the other ones should converge to. This important result supposes both an implementation of the above constraints and an appropriate single-particle-like current. The change of variables that allows one to establish the equivalence of the approaches is given. Some points are illustrated with numerical results for the ground state of a system consisting of scalar particles.
学科领域Physics
DOI10.1140/epja/i2008-10603-9
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000258300000004
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225636
专题理论物理室
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Desplanques, B,Dong YB,Dong, YB. Form factors in RQM approaches: Constraints from space-time translations[J]. EUROPEAN PHYSICAL JOURNAL A,2008,37(1):#REF!.
APA Desplanques, B,董宇兵,&Dong, YB.(2008).Form factors in RQM approaches: Constraints from space-time translations.EUROPEAN PHYSICAL JOURNAL A,37(1),#REF!.
MLA Desplanques, B,et al."Form factors in RQM approaches: Constraints from space-time translations".EUROPEAN PHYSICAL JOURNAL A 37.1(2008):#REF!.
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