Feynman propagator for a particle with arbitrary spin |
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| Authors: | Huang Shi-Zhong Zhang Peng-Fei Ruan Tu-Nan Zhu Yu-Can Zheng Zhi-Peng |
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| Institution: | (1) Department of Physics, Anhui Normal University, 241000 Wuhu, P.R. China;(2) Department of Modern Physics and National Synchrotron Radiation Laborator, University of Science and Technology of China, 230027 Hefei, P.R. China;(3) China Center of Advanced Science and Technology (World Laboratory), 100080 Beijing, P.R. China;(4) Institute of High Energy Physics, Chinese Academy of Science, 100039 Beijing, P.R. China |
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| Abstract: | Based on the solution to the Rarita-Schwinger equations, a direct derivation of the projection operator and propagator for a particle with arbitrary spin is worked out. The projection operator constructed by Behrends and Fronsdal is re-deduced and confirmed, and simplified in the case of half-integral spin; the general commutation rules and Feynman propagator for a free particle of any spin are derived, and explicit expressions for the propagators for spins 3/2, 2, 5/2, 3, 7/2, 4 are provided.Received: 13 March 2003, Revised: 24 April 2005, Published online: 6 July 2005 |
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