1Department of Physics, Anhui Normal University, Wuhu 241000
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Department of Modern Physics, University of Science and Technology of China, Hefei 230027
4Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Projection Operator and Propagator for an Arbitrary Integral
Spin
1Department of Physics, Anhui Normal University, Wuhu 241000
2CCAST (World Laboratory), PO Box 8730, Beijing 100080
3Department of Modern Physics, University of Science and Technology of China, Hefei 230027
4Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
Abstract： Based on the solution of the Bargmann-Wigner equation for an arbitrary integral spin, a direct derivation of the projection operator and propagator for an arbitrary integral spin is presented. The explicit form for the spin projection operators constructed by Behrends and Fronsdal is confirmed, the commutation rules and a general expression for the Feynman propagator for a free particle of arbitrary integral spin are deduced.
2002, Vol. 19 
