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We know that 0-spin particles obey Klein-Gordon equation and 1/2spin particles obey Dirac equation.But I do not know whether higher integer spin particles obey Klein-Gordon equation or not.Similarly,do higher half integer spin particles obey Dirac equation?Because if we can not demontrate the higher spin particles obey Klein-Gordon(for Boson) or Dirac(for Fermion) equations,how can we say about the commutation relations of field operator and momentum operator of field for Bose fields and also how about the anticommutation relations for Fermi fields.Therefore,how can we make the quantization of fields, and how about the exclusion principle of Pauli...etc.

Thank you very much in advanced.