Unitarity of Singh-Hagen Model in D Dimensions

الملخص EN

The particle content of the Singh-Hagen model (SH) in D dimensions is revisited.

We suggest a complete set of spin-projection operators acting on totally symmetric rank-3 fields.

We give a general expression for the propagator and determine the coefficients of the SH model confirming previous results of the literature.

Adding source terms, we provide a unitarity analysis in D dimensions.

In addition, we have also analyzed the positivity of the massless Hamiltonian.