If I want to calculate a decay of excited nucleons,sometimes I must treat the spin 3/2 field operator.(adsbygoogle = window.adsbygoogle || []).push({});

If I use CG coefficient method, for example

http://arxiv.org/abs/hep-ph/0210164 (page 3,the third equation)

But it is a result,not the starting.The thought looks like a synthesis between a vector particle and a spinor one.But how about the expension of original field operator in momentum space into annihilation and creation operators?We will see a direct product of two ladder operator?But the CG coefficient must has its status,so the summation rule of polarization vector and Dirac spinor must be very complicated,is there any established work?

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# Canonical quantization of spin-3/2 particle

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