| Projection Operator and Propagator for an Arbitrary Half—Integral Spin |
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| 引用本文： | 黄时中,阮图南,等.Projection Operator and Propagator for an Arbitrary Half—Integral Spin[J].中国物理快报,2003,20(2):209-212. |
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| 作者姓名： | 黄时中 阮图南 |
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| 作者单位： | [1]DepartmentofPhysics,AnhuiNormalUniversity,Wuhu241000；CCAST（WorldLaboratory）,POBox8730,Beijing100080 [2]DepartmentofModernPhysics,UniversityofScienceandTechnologyofChina,Hefei230027 |
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| 摘 要： | Based on the solution to Bargmann-wigner equation for an arbitrary half-integral spin,a direct derivation of the projction operator and propagator for an arbitrary half-intergral spin is presented.The projection operator constructed by Behrends and Fronsdal is confirmed and simplified.The commutation rules and a general expression for the Feynman propagator for a free particle with arbitrary half-integral spin are deduced.Explicit expressions for the propagators for spins 3/2,5/2and 7/2 are provided.
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| 关 键 词： | 粒子物理 半整数自旋 投影算符 格标函数 |
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