Unitarity of theories containing fractional powers of the d'Alembertian operator

E. C. Marino, Leandro O. Nascimento, Van Sérgio Alves +1

We examine the unitarity of a class of generalized Maxwell U(1) gauge theories in (2+1) D containing the pseudodifferential operator ${\square }^{1-\alpha }$, for $\alpha \in [0,1)$. We show that on…