CAJ | 학술논문

最近Mekfhi(Phys.Rev.D,2005,72:114014)指出,在用Gorden分解做核子磁矩的自旋轨道分解的时候,应该保留时间微分部分,因为夸克场是依赖于时间的.作者说明了为什么当粗略研究一个粒子(不管这个粒子是基本的,还是复合的)的内禀磁矩的时候,是可以忽略掉这一项的,即使考虑波包而不是平面波,因为实际世界中,遇到的更多是波包.作者同样也注意到在一个复合粒子的现象模型中,这一项可能是非零的,因为这个模型中的波函数可能不是真实的Hamiltonian本征态.
최근Mekfhi(Phys.Rev.D,2005,72:114014)지출,재용Gorden분해주핵자자구적자선궤도분해적시후,응해보류시간미분부분,인위과극장시의뢰우시간적.작자설명료위십요당조략연구일개입자(불관저개입자시기본적,환시복합적)적내품자구적시후,시가이홀략도저일항적,즉사고필파포이불시평면파,인위실제세계중,우도적경다시파포.작자동양야주의도재일개복합입자적현상모형중,저일항가능시비령적,인위저개모형중적파함수가능불시진실적Hamiltonian본정태.
Recently, Mekhfi (Phys. Rev. D, 2005, 72:114014 ) remarked that when studying spin-orbital separation of the nucleon magnetic moment with the Gordon decomposition, one should keep a time-derivative term because the quark fields depend on time. The authors clarified that why this Herm vanishes idenically when one rigorously studies the intrinsic magnetic moment of a particle, either fundamental or composite even we have chosen wave packets instead of plane wave, i.e. a superposition of physical plane-wave states, because they are strictly physical and practical. In a quark model description of the nucleon, however, such time-derivative term might contribute because it is hard to construct a true Hamiltonian eigenstate of relativistic interacting quarks.